Getting Started
Hit ▶ PLAY to start the bassline engine. The worms will emerge and react to the music. Use RANDOMIZE to generate a new bassline instantly, or click individual step pads to build your own pattern.
Transport & Tempo
▶ PLAY / ⏸ PAUSEStart or pause the sequencer
■ STOPStop and reset position
BPM ‹ ›Nudge BPM by 1. «/» jumps by 5
SWINGDrag to add groove shuffle feel
🔥 DROPTriggers an explosive bass drop + filter sweep
Groove Modes
D&B174 BPM half-time, heavy Reese bass, classic drum & bass patterns
BREAKS140 BPM funky breakbeat syncopation, high swing
ACID135 BPM rolling 303-style, lots of slides & filter movement
GLITCH150 BPM stuttered chaos, extreme micro-timing
Soil Modes (Bass Character)
DIRTA minor — dark, warm, earthy basslines
METALE phrygian — tense, industrial, grinding
FLESHD pentatonic — funky, organic, melodic
VOIDF# minor — deep, mysterious, eerie
Step Sequencer
CLICK padToggle step on or off
A buttonACCENT — louder hit + filter spike
S buttonSLIDE — portamento glide from previous note
🎲 RANDOMIZEGenerate a new groove-aware bassline
The engine mutates the pattern automatically over time based on the CHAOS knob. Lower chaos = stable pattern, higher = constantly evolving.
Sound Knobs (drag up/down · double-click to type)
DETUNESpread between the two Reese oscillators — wider = fatter/chorused
SHAPEWaveshaping amount on the mid layer — adds harmonic grit
DEPTHOverall heaviness — affects envelope sustain and sub level
CHAOSPattern mutation rate — how fast the bassline evolves
CUTOFFLow-pass filter frequency — roll off the highs for warmth
RESFilter resonance — adds the acid 303 squelch
ENV→FHow much the envelope opens the filter on each note
DRIVESoft saturation amount — adds warmth and weight
LFO1 R/DRate and depth of slow filter wobble
LFO2 R/DRate and depth of fast pitch/texture wobble
Layer Mix (drag the bars)
SUBPure sine sub-bass — the weight you feel in your chest
MIDReese detuned saws — the main bass character
TOPHigh-passed grit + click transient — attack definition
Recording
Click ⏺ RECORD or the RECORD button in the export bar to open the recording drawer. Choose your format (WEBM / WAV / MP3), duration, and quality. Hit START RECORDING — the drawer minimises automatically so you can keep working on the music while recording. Click the red tab at the bottom to re-open it. Hit STOP RECORDING when done and the file downloads automatically.
Export & Seeds
MIDIExport pattern as a .mid file to use in your DAW
🔗 SEEDCopy a shareable link — anyone can recreate your exact patch
📂 LOADLoad a previously saved .json patch file
