JJazzLab
A complete and open application for automatic backing tracks generation.
Install / Use
/learn @jjazzboss/JJazzLabREADME
JJazzLab
JJazzLab is a complete and open application dedicated to backing tracks generation. You type in chord symbols, select a rhythm (style), then the application generates a complete backing track with drums, bass, guitar, piano, strings, etc.
The objective is to generate intelligent and interesting backing tracks, i.e tracks which are:
- realistic
- non-boring (with variations)
- easily customizable, even for complex songs
The JJazzLab UI (available in several languages English, German, French, Chinese, Portuguese, etc thanks to the JJazzLab community):

From version 4.0 JJazzLab embeds its own customized software synth based on FluidSynth. For even better sounds, just connect JJazzLab to VST plugins via a virtual Midi cable and a VST host.
Videos
Check out the demos of the JJazzLab YouTube channel.
An open architecture
JJazzLab is based on the Apache Netbeans Platform which provides a reliable and extensible application architecture via plugins.
Developers can easily add music generation capabilities or try new ideas, without taking care of all the "plumbing".
JJazzLab Toolkit
The JJazzLab Toolkit is a single standalone jar (all dependencies are included) which contains the JJazzLab core (no GUI).
It makes it easy to experiment with JJazzLab models and algorithms, or create your own plugins.
Download
Visit www.jjazzlab.org for ready-to-use installers for Win, Linux and Mac.
License
Lesser GPL v2 (LGPL v2.1)
Documentation
https://jjazzlab.gitbook.io/user-guide/
https://jjazzlab.gitbook.io/developer-guide/
Contact
For more information use the Contact page at www.jjazzlab.org
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