Sick Beat Betty
Best for Producers who want generative MIDI drum patterns with per-generator rhythm, swing, phase, and velocity movement.
Free alternative to 
Bloom Drum Machine
View on Plugin Boutique
ADSR Drum Machine
View on ADSR
Key Features
- Open-source MIDI drum machine/generator
- VST and standalone application
- Generators targeted to MIDI notes
- Beat/bar-based square-wave rhythm sources
- Sawtooth source mixed for velocity dynamics
- JUCE cross-platform project
- Version 1.0.1 release
- Windows build functional
Description
Sick Beat Betty is Jason Howard’s open-source MIDI drum machine and generator plug-in. Its generators target MIDI notes using square waves based on beat and bar periods, with a matching sawtooth source that can be mixed to shape note velocity and dynamics. The GitHub release identifies version 1.0.1; Windows builds are functional while macOS and Linux builds remain in development.
Frequently Asked Questions
What does Sick Beat Betty generate?
It generates MIDI drum patterns with a set of rhythm generators targeted to MIDI notes.
How are the rhythms built?
Square waves are generated from assigned beat and bar periods, with a sawtooth source that can shape velocity.
Which release is listed?
The release identifies version 1.0.1.
Which systems are currently functional?
The release notes say Windows builds are functional while macOS and Linux work is still in progress.
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