Explain this lesson in a simpler way for a beginner.
Absolutely — here’s the lesson in a much simpler, beginner-friendly way.
# The main idea
This lesson is really about **making a simple sub bass groove** that feels:
- **deep**
- **dark**
- **heavy**
- **minimal**
For this Alix Perez-style approach, the secret is **not lots of notes**.
It’s usually:
- **one clean sub sound**
- **mostly one main note**
- **a few short hits**
- **small note changes**
- **space between notes**
The “rattle” feeling comes from **rhythm and repetition**, not from making the bass complicated.
---
# What you’re trying to make
In Ableton, you want to build:
- a **clean sub**
- a **1-bar or 2-bar MIDI pattern**
- a bassline that sits nicely with **DnB drums**
- something that feels like it’s **rolling forward**
Think:
- not a melody
- not a big reese
- not a long held drone
More like:
- **thump**
- gap
- **thump-thump**
- gap
- **small pitch change**
- back to root
---
# Super simple version of the process
## 1. Make a basic sub sound
In Ableton:
- Add a **MIDI track**
- Load **Operator**
- Use a **sine wave**
- Keep it very plain
Good beginner setup:
- 1 oscillator
- sine wave
- low sustain or short decay
- short release
Why:
You want to hear the **pattern clearly**, not get distracted by sound design.
---
## 2. Pick a key and stay near one note
Example:
- choose **F minor**
- use **F** as your main sub note
Then maybe test only one or two extra notes:
- F
- Ab
- maybe Eb
- back to F
That’s enough.
Beginner rule:
- if you used too many different notes, simplify it
This style works because the bass feels **centered and controlled**.
---
## 3. Write the rhythm first
This is the most important part.
In DnB, your sub should work **with the drums**, not just play nonstop.
A simple idea:
- put one note near the start
- leave a gap
- add another note later
- maybe repeat a short note near the end of the bar
So instead of this:
- one long bass note over the whole bar
Do this:
- short note
- rest
- short note
- short repeated note
- rest
Why:
That gives you the **rolling low-end pulse**.
---
## 4. Use silence
This matters a lot.
Heavy sub bass often feels stronger when it **doesn’t play all the time**.
So:
- let the kick breathe
- leave space before or after the snare
- don’t fill every beat with bass
In dark DnB, space helps the bass feel more dangerous and more physical.
---
## 5. Add one small pitch change
Once the rhythm feels good, add **just one different note**.
For example:
- mostly F
- one Ab
- back to F
Or:
- mostly root
- one note a semitone away for tension
- back to root
That small move gives the groove a bit of emotion and darkness without turning it into a lead.
---
## 6. Create the “rattle”
The rattle is usually just **a repeated low-end pulse**.
Try patterns like:
- short note, short note, longer note
- one note, then a quick repeated pair
- one hit, gap, two quick hits
Keep it controlled.
If it starts sounding too busy, delete one note.
That’s very important in this style.
---
# Easy Ableton workflow
## Step-by-step in MIDI
### Make the sub
- Insert **Operator**
- Choose **sine**
- Turn off extra oscillators if needed
- Keep it mono if possible
### Write a 1-bar clip
- Create a **1 bar MIDI clip**
- Start with only the **root note**
- Use short notes, not one long note
### Add rhythm
Try placing notes so they answer the drums.
For example:
- one hit early
- one hit after a gap
- one repeated hit near the end
### Add one note change
- duplicate one note
- move it up slightly, like to a minor 3rd
- listen if it adds tension
- if not, go back
### Duplicate to 2 bars
- copy bar 1 into bar 2
- change only one thing:
- move one note
- remove one note
- change one pitch
That gives you variation without losing the groove.
---
# What to listen for
When you play drums and bass together, ask:
- Does the kick still hit clearly?
- Does the sub feel heavy?
- Is the groove simple but effective?
- Does it feel like a bassline, not a melody?
- Is there enough empty space?
If yes, you’re on the right track.
---
# Common beginner mistakes
## Too many notes
If the bassline feels messy, delete notes.
## Notes too long
If the sub smears together, shorten note lengths.
## Too many pitch jumps
Keep the bass close to the root.
## Bass over every kick
Let some kick hits breathe.
## Fixing everything with sound design
A better bass pattern matters more than a fancier patch.
---
# A very simple starter pattern idea
If you want a safe starting point, try this mindset:
**Bar 1**
- root note
- rest
- root note
- short repeated root note
**Bar 2**
- same idea
- but change one note to a tension note
- then return to root
That’s enough for a beginner Alix Perez-style sub idea.
---
# Quick beginner checklist
## Sound
- [ ] Clean sine sub
- [ ] No fancy layer needed yet
## Notes
- [ ] Mostly root note
- [ ] Only 1 small pitch change
## Rhythm
- [ ] Short phrases
- [ ] Some repeated hits
- [ ] Clear gaps and silence
## Groove
- [ ] Works with kick and snare
- [ ] Doesn’t play constantly
- [ ] Feels heavy and restrained
## Arrangement
- [ ] 1 bar works
- [ ] 2nd bar has only a small variation
---
# If I had to reduce the whole lesson to one sentence
**Make a very simple sub, play only a few notes near the root, use short rhythmic hits with space, and let the groove create the weight.**
---
If you want, I can also give you:
1. a **copyable Ableton MIDI pattern**
2. an **Operator sub patch setup**
3. a **super basic 15-minute exercise** based on this lesson.
Turn this into exact step-by-step Ableton actions I can follow.
Absolutely — here is a **literal Ableton step-by-step** you can follow to make a **beginner Alix Perez-style rattling sub bassline**.
I’ll keep it very practical and focused on **one simple sub groove under DnB drums**.
---
# Goal
Make:
- a **clean sub**
- a **1-bar groove**
- a **2-bar variation**
- something that feels **deep, sparse, dark, and rolling**
---
# Part 1: Set up the project
## 1. Open a new Ableton Live set
- Open **Ableton Live**
- Start with a **blank project**
## 2. Set the tempo
- At the top-left, set tempo to **174 BPM**
That puts you in normal drum and bass range.
## 3. Add a drum loop or simple drums
You need drums playing while you write the bass.
### Easy option:
- Drag in a **DnB drum loop** onto an **audio track**
### Better beginner option:
Make a very simple kick/snare pattern:
- Create a **new MIDI track**
- Load a **Drum Rack**
- Put a kick on:
- **1.1**
- maybe another kick later if you want
- Put a snare on:
- **1.2**
- **1.4**
If you already have drums, use those.
Important:
You want to hear how the sub sits **with the drums**, not in solo.
---
# Part 2: Build the sub sound
## 4. Create a new MIDI track for the sub
- Press **Cmd+Shift+T** on Mac or **Ctrl+Shift+T** on Windows
- Name it: **Sub Bass**
## 5. Load Operator
- In the Browser:
- go to **Instruments**
- drag **Operator** onto the Sub Bass track
## 6. Make Operator a plain sine sub
Inside Operator:
- Make sure only **Oscillator A** is active
- Set **Oscillator A waveform** to **Sine**
- Turn off or reduce the other oscillators if needed
If you see multiple oscillators active:
- disable **B, C, D** or turn their levels down fully
## 7. Set the volume envelope
You want short, controlled sub notes.
In Operator, find the amp envelope and set roughly:
- **Attack**: 0 ms
- **Decay**: around 300–600 ms
- **Sustain**: low or medium-low
- **Release**: very short, around 30–80 ms
What you’re aiming for:
- notes start clean
- notes stop clean
- sub does **not smear** into the next note
If it sounds too long:
- lower **Release**
- lower **Sustain**
- shorten MIDI notes later too
---
# Part 3: Set key and write a 1-bar clip
## 8. Choose a key
Use something simple and dark.
Good beginner choice:
- **F minor**
That means your root note is **F**
## 9. Create a 1-bar MIDI clip
- Double-click an empty slot in Session View
or
- in Arrangement View, highlight 1 bar and press **Cmd+Shift+M / Ctrl+Shift+M**
Set the clip length to:
- **1 bar**
## 10. Draw in only the root note first
In the MIDI editor:
- Find **F1** or **F0** depending on where it feels deep but clean
- Draw in a few **short F notes**
Do **not** draw one long note across the whole bar.
Start with this kind of idea:
- one short note near the start
- a gap
- another short note later
- one repeated short hit near the end
Think:
- hit
- rest
- hit
- hit
- rest
---
# Part 4: Exact first pattern to try
Use this as your **starter pattern**.
## 11. Program this simple 1-bar root-note groove
In your MIDI clip, place **F notes only**.
Try this:
- note 1: **1.1.1**
- note 2: **1.2.3**
- note 3: **1.3.4**
- note 4: **1.4.2**
Make them short at first:
- around a **1/8 note** or slightly shorter
- make one of the later ones a little longer if you want contrast
If your grid is confusing:
- set grid to **1/16**
- right-click in the piano roll
- choose **Fixed Grid → 1/16**
The point is not exact perfection yet.
The point is:
- don’t fill every beat
- leave space
- make the sub answer the drums
---
# Part 5: Shape the phrase
## 12. Change note lengths so it feels more alive
Now edit the note lengths.
Try this shape:
- first note = **short**
- second note = **slightly longer**
- third note = **short**
- fourth note = **short**
This helps create the “talking” low-end phrasing.
You want:
- not all notes the same length
- not one endless sustained note
- clear gaps between notes
## 13. Loop the bar and listen with drums
- Turn on **Loop**
- Play drums + sub together
Ask:
- does the kick still feel clean?
- does the sub feel heavy?
- are the gaps helping the groove?
If the bass feels too constant:
- delete one note
If the bass feels too empty:
- move one note slightly later rather than adding lots more notes
---
# Part 6: Add the “rattle”
## 14. Turn one part into a repeated pulse
To get the rattling feel, make one small repeated pair.
Example:
If you currently have one note late in the bar, split it into two shorter notes.
So instead of:
- one note at **1.4.2**
Try:
- one note at **1.4.2**
- another note at **1.4.3**
Both short.
This creates that:
- low-end pulse
- subtle shake
- rolling pressure
Important:
Keep it controlled.
If it starts sounding too chatty, remove one.
---
# Part 7: Add one pitch change only
## 15. Duplicate one note and change its pitch
Now add **one tension note**.
Since we’re using **F minor**, good options are:
- **Ab** = minor 3rd
- **Eb** = lower tension move
- **E** = semitone tension if you want something darker and more uneasy
Best beginner move:
- change just **one** of the later notes from **F** to **Ab**
For example:
- keep most notes on **F**
- make the last note **Ab**
- then in the next bar, return to **F**
Why:
That gives character without turning the bass into a melody.
---
# Part 8: Make it work with DnB drums
## 16. Check against kick and snare
Play the full loop.
In drum and bass, the sub should not crush the drum groove.
Listen for:
- Is the kick still punching?
- Is the sub starting exactly on top of every kick?
- Does the groove feel better when bass comes slightly after the kick?
- Is the snare still clear and strong?
If the kick feels weak:
- shorten the first bass note
- move one bass note slightly later
- remove a note right before a kick
A really common dark DnB move:
- let the kick hit
- then let the sub answer it
That usually feels more controlled and heavier.
---
# Part 9: Add light harmonics so the sub reads better
## 17. Add Saturator after Operator
- In Browser, go to **Audio Effects**
- Drag **Saturator** after **Operator**
## 18. Use very light saturation
Try this:
- choose a soft curve like **Analog Clip** or keep default
- turn **Drive** up just a little:
- around **1 to 3 dB**
- turn output down if it gets too loud
You are not trying to distort it hard.
You just want a little harmonic content so the sub is easier to hear.
If it starts sounding buzzy:
- back the Drive down
For this lesson, the **pattern matters more than the processing**.
---
# Part 10: Make a 2-bar loop
## 19. Duplicate your 1-bar clip to 2 bars
Inside the MIDI clip:
- extend the loop to **2 bars**
- copy bar 1 into bar 2
## 20. Change only one thing in bar 2
Choose just one:
- move one note later
- remove one repeated hit
- change one note pitch
- shorten one note
- add one extra rest
Example:
- bar 1 ends with **F-F**
- bar 2 ends with **Ab-F**
or
- bar 2 has one less repeated note
That gives movement while keeping the hypnotic low-end groove.
---
# Part 11: Basic cleanup in Ableton
## 21. Add Utility to keep the low end controlled
- Drag **Utility** after Saturator
Use it to keep things simple and centered.
You can:
- leave Width at normal if it’s already mono
- or make sure the sub stays centered in your setup
If your patch somehow feels wide:
- narrow it
- keep sub information centered for DnB
## 22. Check note range
If the sub feels weak or too high:
- move all MIDI notes down by 12 semitones
If it feels muddy or too low to read:
- move them up by 12 semitones
Usually you want the sub to feel:
- deep
- stable
- not flabby
---
# A full exact beginner workflow
If you want the whole thing as a checklist, follow this exactly:
## Ableton action checklist
### Project
- [ ] Open blank Live set
- [ ] Set tempo to **174 BPM**
- [ ] Load or build a simple DnB drum pattern
### Sub track
- [ ] Create a new MIDI track
- [ ] Load **Operator**
- [ ] Use only **Oscillator A**
- [ ] Set waveform to **Sine**
- [ ] Set short envelope:
- [ ] Attack 0
- [ ] Decay medium
- [ ] Sustain low/medium-low
- [ ] Release short
### MIDI clip
- [ ] Create a **1-bar MIDI clip**
- [ ] Choose **F minor**
- [ ] Start with **F** as the root note
- [ ] Draw 3–4 short F notes
- [ ] Leave gaps between notes
- [ ] Make one pair of repeated short notes near the end
### Phrasing
- [ ] Make note lengths different
- [ ] Avoid one long sustained note
- [ ] Listen with drums, not solo
### Tension note
- [ ] Change only one note to **Ab** or another nearby tension note
- [ ] Return back to **F**
### Control
- [ ] Shorten notes if sub smears
- [ ] Move notes later if they clash with kick
- [ ] Delete one note if the groove feels too busy
### Audibility
- [ ] Add **Saturator**
- [ ] Use only light drive
### Variation
- [ ] Duplicate to **2 bars**
- [ ] Change only one thing in bar 2
---
# What your finished result should feel like
When done, your bassline should sound:
- **deep**
- **simple**
- **dark**
- **rolling**
- **heavy without constant notes**
It should feel more like:
- controlled sub pressure
and less like:
- a melody
- a reese riff
- a nonstop drone
---
# Very simple “if it goes wrong” fixes
## If it sounds too busy
- delete one note
- keep mostly root note
- remove extra pitch changes
## If it sounds weak
- shorten notes
- leave more space
- let the kick breathe
- add a little saturation
## If it sounds too melodic
- go back to mostly **F**
- keep only one tension note
## If it sounds muddy
- shorten release
- shorten MIDI note lengths
- avoid overlapping notes
---
# Best beginner pattern formula
If you forget everything, do this:
- **root note**
- **gap**
- **root note**
- **short repeated root**
- **one tension note in bar 2**
- **back to root**
That is the core of this lesson.
---
If you want, I can next give you either:
1. a **copyable MIDI note-by-note pattern with exact bar positions**, or
2. an **exact Operator patch with knob values**.
a **copyable MIDI note-by-note pattern with exact bar positions**
Absolutely — here’s a **copyable MIDI note-by-note pattern** for this **beginner Alix Perez-style rattling sub bassline** lesson.
I’ll give you:
1. a **1-bar pattern**
2. a **2-bar version**
3. the **exact note positions**
4. the **exact note lengths**
5. how to enter it in **Ableton Live**
Use this with a **plain sine sub in Operator** first.
---
# Setup first
## Project settings
- **Tempo:** 174 BPM
- **Key:** **F minor**
- **Main sub note:** **F1**
- Grid in piano roll: **1/16**
In Ableton:
- open your MIDI clip
- right-click in the piano roll
- choose **Fixed Grid → 1/16**
---
# Pattern 1: super safe 1-bar starter
This one stays mostly on the root and creates the “rattle” with rhythm.
## Notes to enter
Use these exact notes in **bar 1**:
1. **F1** at **1.1.1**
- length: **1/8**
2. **F1** at **1.2.3**
- length: **1/8**
3. **F1** at **1.4.1**
- length: **1/16**
4. **F1** at **1.4.2**
- length: **1/16**
That gives you:
- one strong opening hit
- space
- one reply
- a short repeated pulse at the end
This is a good beginner “rattle” shape.
---
# Pattern 2: 2-bar version with one tension note
Now copy bar 1 into bar 2, then change only one note.
## Bar 1
1. **F1** at **1.1.1**
- length: **1/8**
2. **F1** at **1.2.3**
- length: **1/8**
3. **F1** at **1.4.1**
- length: **1/16**
4. **F1** at **1.4.2**
- length: **1/16**
## Bar 2
1. **F1** at **2.1.1**
- length: **1/8**
2. **F1** at **2.2.3**
- length: **1/8**
3. **Ab1** at **2.4.1**
- length: **1/16**
4. **F1** at **2.4.2**
- length: **1/16**
This works well because:
- bar 1 establishes the root
- bar 2 adds a small dark tension move with **Ab**
- then it returns straight back to **F**
That is very in line with the lesson:
- simple
- sparse
- near the root
- only one small pitch move
---
# Ableton entry steps
## How to draw it in
### 1. Create a 2-bar MIDI clip
- on your Sub Bass track
- create a MIDI clip
- set it to **2 bars**
### 2. Set the grid
- right-click in the piano roll
- choose **Fixed Grid → 1/16**
### 3. Draw the notes
Enter exactly:
### Bar 1
- **F1** at **1.1.1**, length **2 sixteenth notes**
- **F1** at **1.2.3**, length **2 sixteenth notes**
- **F1** at **1.4.1**, length **1 sixteenth note**
- **F1** at **1.4.2**, length **1 sixteenth note**
### Bar 2
- **F1** at **2.1.1**, length **2 sixteenth notes**
- **F1** at **2.2.3**, length **2 sixteenth notes**
- **Ab1** at **2.4.1**, length **1 sixteenth note**
- **F1** at **2.4.2**, length **1 sixteenth note**
---
# What it should feel like
With drums, this should feel like:
- **hit**
- space
- **hit**
- space
- **rattle-rattle**
- repeat
- one small dark variation in bar 2
It should **not** feel like a melody.
It should feel like:
- low-end pulses
- controlled movement
- a rolling answer to the drums
---
# If it clashes with your kick
This is common in DnB.
Try these fixes:
- shorten the first note
- move the second note slightly later
- remove one of the last two short notes
- let the kick hit before the sub answers
A good dark DnB sub usually feels better when it’s **placed around the drums**, not just stamped on every beat.
---
# Slightly heavier alternate pattern
If you want a version with a bit more forward motion, try this instead:
## Bar 1
- **F1** at **1.1.1** — length **1/8**
- **F1** at **1.2.4** — length **1/16**
- **F1** at **1.3.4** — length **1/16**
- **F1** at **1.4.2** — length **1/8**
## Bar 2
- **F1** at **2.1.1** — length **1/8**
- **F1** at **2.2.4** — length **1/16**
- **Ab1** at **2.3.4** — length **1/16**
- **F1** at **2.4.2** — length **1/8**
This version feels a bit more pulled forward, but still minimal.
---
# Best one to start with
For this lesson, I recommend using this first:
## Final recommended beginner pattern
### Bar 1
- **F1** — **1.1.1** — **1/8**
- **F1** — **1.2.3** — **1/8**
- **F1** — **1.4.1** — **1/16**
- **F1** — **1.4.2** — **1/16**
### Bar 2
- **F1** — **2.1.1** — **1/8**
- **F1** — **2.2.3** — **1/8**
- **Ab1** — **2.4.1** — **1/16**
- **F1** — **2.4.2** — **1/16**
---
# Mini checklist
- [ ] Operator with sine wave
- [ ] 174 BPM
- [ ] 2-bar MIDI clip
- [ ] Grid set to 1/16
- [ ] Mostly **F1**
- [ ] One **Ab1** tension note
- [ ] Short note pair at end of each bar
- [ ] Test with drums, not in solo
---
If you want, I can next give you:
1. **the exact Operator patch knob values**, or
2. **a matching kick/snare MIDI pattern** that fits this bassline.
give me the cat command for the midi file
If you mean a **terminal `cat` command** to print a MIDI file, it’s just:
```bash
cat your_bassline.mid
```
But for a **`.mid` file**, that usually prints unreadable binary garbage, because MIDI files are not plain text.
## Better options
### Show the file exists
```bash
ls -l your_bassline.mid
```
### Identify it as MIDI
```bash
file your_bassline.mid
```
### Hex view it
```bash
xxd your_bassline.mid | head
```
or
```bash
hexdump -C your_bassline.mid | head
```
## If your goal is to use it in Ableton
You do **not** use `cat`.
You would:
- save the MIDI file as something like `alix_perez_sub_pattern.mid`
- drag it from Finder/Explorer into an **Ableton MIDI track**
- load your **Operator sine sub** on that track
- then check that the notes match our pattern:
- **F1 at 1.1.1**
- **F1 at 1.2.3**
- **F1 at 1.4.1**
- **F1 at 1.4.2**
- **F1 at 2.1.1**
- **F1 at 2.2.3**
- **Ab1 at 2.4.1**
- **F1 at 2.4.2**
## If you actually want a shell command to create a text file containing the pattern
Use this instead:
```bash
cat > alix_perez_sub_pattern.txt <<'EOF'
Bar 1
F1 1.1.1 length 1/8
F1 1.2.3 length 1/8
F1 1.4.1 length 1/16
F1 1.4.2 length 1/16
Bar 2
F1 2.1.1 length 1/8
F1 2.2.3 length 1/8
Ab1 2.4.1 length 1/16
F1 2.4.2 length 1/16
EOF
```
Then view it with:
```bash
cat alix_perez_sub_pattern.txt
```
If you want, I can give you either:
1. a **real Python script that generates the `.mid` file**, or
2. a **base64 blob + shell command** to recreate the MIDI file directly.
**base64 blob + shell command** to recreate the MIDI file directly.
Yes — easiest clean way is to give you a **base64 MIDI blob** and a **shell command** to turn it into a `.mid` file you can drag into Ableton.
## Important quick note
I can give you the command format perfectly, but to give you a **real valid MIDI base64 blob**, I need to actually encode the MIDI bytes exactly. Rather than risk giving you a broken `.mid`, the most reliable practical solution is:
- I give you a **tiny Python script embedded in a shell command**
- it writes a valid MIDI file directly
- then you drag that into Ableton Live
That is much safer than fake base64.
---
# One-command shell version that creates the MIDI file
Copy this into Terminal:
```bash
python3 - <<'PY'
import struct
def vlq(n):
out = [n & 0x7F]
n >>= 7
while n:
out.insert(0, 0x80 | (n & 0x7F))
n >>= 7
return bytes(out)
ppq = 480
tempo = 500000 # 120 BPM MIDI default tempo event; Ableton project tempo will override if needed
notes = [
# start_tick, midi_note, duration_tick, velocity
(0, 29, 240, 100), # F1 at 1.1.1 length 1/8
(720, 29, 240, 100), # F1 at 1.2.3 length 1/8
(1440, 29, 120, 100), # F1 at 1.4.1 length 1/16
(1560, 29, 120, 100), # F1 at 1.4.2 length 1/16
(1920, 29, 240, 100), # F1 at 2.1.1 length 1/8
(2640, 29, 240, 100), # F1 at 2.2.3 length 1/8
(3360, 32, 120, 100), # Ab1 at 2.4.1 length 1/16
(3480, 29, 120, 100), # F1 at 2.4.2 length 1/16
]
events = []
# tempo/meta
track = bytearray()
track += vlq(0) + bytes([0xFF, 0x51, 0x03]) + struct.pack(">I", tempo)[1:]
track += vlq(0) + bytes([0xFF, 0x58, 0x04, 4, 2, 24, 8]) # 4/4
# collect note on/off events
raw = []
for start, note, dur, vel in notes:
raw.append((start, 0x90, note, vel))
raw.append((start + dur, 0x80, note, 0))
raw.sort(key=lambda x: (x[0], x[1]))
last = 0
for tick, status, note, val in raw:
track += vlq(tick - last) + bytes([status, note, val])
last = tick
track += vlq(3600 - last) + bytes([0xFF, 0x2F, 0x00])
header = b'MThd' + struct.pack(">IHHH", 6, 0, 1, ppq)
trk = b'MTrk' + struct.pack(">I", len(track)) + track
with open("alix_perez_sub_pattern.mid", "wb") as f:
f.write(header + trk)
print("Wrote alix_perez_sub_pattern.mid")
PY
```
---
# What this creates
It writes this exact lesson pattern:
## Bar 1
- **F1** at **1.1.1** — **1/8**
- **F1** at **1.2.3** — **1/8**
- **F1** at **1.4.1** — **1/16**
- **F1** at **1.4.2** — **1/16**
## Bar 2
- **F1** at **2.1.1** — **1/8**
- **F1** at **2.2.3** — **1/8**
- **Ab1** at **2.4.1** — **1/16**
- **F1** at **2.4.2** — **1/16**
That’s the same sparse, dark, rattling beginner sub pattern from the lesson.
---
# If you really want base64 specifically
After generating the file, run:
```bash
base64 alix_perez_sub_pattern.mid > alix_perez_sub_pattern.mid.b64
```
To print it:
```bash
cat alix_perez_sub_pattern.mid.b64
```
To recreate the MIDI later from that base64 file:
```bash
base64 -d alix_perez_sub_pattern.mid.b64 > alix_perez_sub_pattern.mid
```
---
# Mac/Linux one-liner to recreate from inline base64
Once you have the `.b64` contents, the format is:
```bash
cat > alix_perez_sub_pattern.mid.b64 <<'EOF'
PASTE_BASE64_HERE
EOF
base64 -d alix_perez_sub_pattern.mid.b64 > alix_perez_sub_pattern.mid
```
---
# Ableton steps after that
- Open your project at **174 BPM**
- Drag `alix_perez_sub_pattern.mid` into a **MIDI track**
- Load **Operator**
- Use a **sine wave**
- Put the track in a low register
- Add a tiny bit of **Saturator**
- Check the sub against your kick and snare
If the notes import too high or low:
- select all MIDI notes in Ableton
- move them up/down by **12 semitones**
---
# Best practical workflow
## Do this:
1. run the Python command above
2. drag the MIDI into Ableton
3. save the file in your sample/pattern folder
4. if you still want base64, encode it afterward
That is the safest route for this lesson.
If you want, I can next give you:
- a **true pasted base64 blob** for this exact MIDI, or
- a **matching kick/snare MIDI file generator** for the same dark DnB groove.
python3 - <<'PY'
import struct
def vlq(n):
out = [n & 0x7F]
n >>= 7
while n:
out.insert(0, 0x80 | (n & 0x7F))
n >>= 7
return bytes(out)
ppq = 480
tempo = 500000 # 120 BPM MIDI default tempo event; Ableton project tempo will override if needed
notes = [
# start_tick, midi_note, duration_tick, velocity
(0, 29, 240, 100), # F1 at 1.1.1 length 1/8
(720, 29, 240, 100), # F1 at 1.2.3 length 1/8
(1440, 29, 120, 100), # F1 at 1.4.1 length 1/16
(1560, 29, 120, 100), # F1 at 1.4.2 length 1/16
(1920, 29, 240, 100), # F1 at 2.1.1 length 1/8
(2640, 29, 240, 100), # F1 at 2.2.3 length 1/8
EOFTE_BASE64_HEREsub_pattern.mid.b64 <<'EOF't is:e64z_sub_pattern.midlesson.
Wrote alix_perez_sub_pattern.mid
---: command not found
It: command not found
-: command not found
-: command not found
-: command not found
-: command not found
-: command not found
-: command not found
-: command not found
-: command not found
That’s: command not found
---: command not found
After: command not found
(base) root@Ubuntu-2404-noble-amd64-base ~ #
You pasted a **broken mixed command** into Terminal.
What happened is the Python block got contaminated with extra text like:
- `EOFTE_BASE64_HERE...`
- lesson text
- shell markers
- normal sentence text
So Terminal started trying to run random words like:
- `It`
- `That’s`
- `---`
as shell commands.
## Fix
Use this **clean version only**.
Copy this whole block exactly into Terminal:
```bash
python3 - <<'PY'
import struct
def vlq(n):
out = [n & 0x7F]
n >>= 7
while n:
out.insert(0, 0x80 | (n & 0x7F))
n >>= 7
return bytes(out)
ppq = 480
tempo = 500000
notes = [
(0, 29, 240, 100), # F1 at 1.1.1 length 1/8
(720, 29, 240, 100), # F1 at 1.2.3 length 1/8
(1440, 29, 120, 100), # F1 at 1.4.1 length 1/16
(1560, 29, 120, 100), # F1 at 1.4.2 length 1/16
(1920, 29, 240, 100), # F1 at 2.1.1 length 1/8
(2640, 29, 240, 100), # F1 at 2.2.3 length 1/8
(3360, 32, 120, 100), # Ab1 at 2.4.1 length 1/16
(3480, 29, 120, 100), # F1 at 2.4.2 length 1/16
]
track = bytearray()
track += vlq(0) + bytes([0xFF, 0x51, 0x03]) + struct.pack(">I", tempo)[1:]
track += vlq(0) + bytes([0xFF, 0x58, 0x04, 4, 2, 24, 8])
events = []
for start, note, dur, vel in notes:
events.append((start, 0x90, note, vel))
events.append((start + dur, 0x80, note, 0))
events.sort(key=lambda x: (x[0], x[1]))
last = 0
for tick, status, note, val in events:
track += vlq(tick - last) + bytes([status, note, val])
last = tick
track += vlq(3600 - last) + bytes([0xFF, 0x2F, 0x00])
header = b'MThd' + struct.pack(">IHHH", 6, 0, 1, ppq)
chunk = b'MTrk' + struct.pack(">I", len(track)) + track
with open("alix_perez_sub_pattern.mid", "wb") as f:
f.write(header + chunk)
print("Wrote alix_perez_sub_pattern.mid")
PY
```
## Then check it worked
Run:
```bash
ls -l alix_perez_sub_pattern.mid
file alix_perez_sub_pattern.mid
```
You should see the file exists.
---
## If you want base64 after creating it
Run:
```bash
base64 alix_perez_sub_pattern.mid > alix_perez_sub_pattern.mid.b64
```
To recreate it later:
```bash
base64 -d alix_perez_sub_pattern.mid.b64 > alix_perez_sub_pattern_restored.mid
```
---
## If Terminal is still acting weird
You may still be inside a broken quote/heredoc state. Easiest fix:
- press **Ctrl+C**
- then paste the clean command again
If needed, close Terminal and open a fresh shell.
---
## In Ableton after that
For this lesson’s sub pattern:
- drag `alix_perez_sub_pattern.mid` into a **MIDI track**
- load **Operator**
- set it to a **sine**
- set project tempo to **174 BPM**
- keep the sub **mono/centered**
- add very light **Saturator**
- test it with kick and snare, not solo
This MIDI is the same sparse Perez-style idea:
- mostly **F1**
- one **Ab1** tension note
- short repeated low-end pulse near the end of each bar
If you want, I can now give you:
1. a **matching clean Operator patch command/setup**, or
2. a **matching kick/snare MIDI generator** for this exact bassline.
