Software · Audio & music

JJazzLab

Generate backing tracks for any song.

Completely free
Linux
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub
License: LGPL-3.0+ — Open source (copyleft)confirmed by Flathub
Open source: Yes
Commercial use: Yesconfirmed by Official plan pages (pricing, licence, terms), Flathub
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: not documented
Ads: not documented
Platforms: LinuxEstablished by Linux: Flathub
Publisher: Jerome Lelasseux
Latest version: 5.2.1 (13 April 2026)
Latest activity: 14 April 2026
Source code: github.com/jjazzboss

At a glance

All of JJazzLab is free: no feature is locked behind a paid plan, and its code is open.

Its licence (LGPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

About

Fed up with boring backing tracks? Try JJazzLab and make your own dynamic backing tracks in just a few minutes! "Love it, works as expected, wow, thanks to the author" - "Absolutely fantastic app!" (YouTube comments) Features: Dynamic backing tracks - Create professional-quality backing tracks that breathe with real musicality. Musically alive - Add variety, rhythmic accents and natural dynamics that keep your practice sessions inspiring. Hundreds of styles at your fingertips - Master jazz standards with the signature jjSwing style, or explore any genre using compatible Yamaha style files for endless possibilities. Simple user interface - Type in a few chord symbols, choose a style and hit play. No complex setup required. Grows with your skills - Whether you're working on a simple blues or a complex composition with multiple sections and tempo changes, JJazzLab adapts to your needs. Open-source platform for musicians and developers - JJazzLab welcomes community contributions, custom plugins, and new music generation features that keep evolving.

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Official plan pages (pricing, licence, terms) (commercial use) — 9 November 2026
Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 8 November 2026
Last technical check: 7 November 2026
Description from Flathub — AppStream (Flathub)

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