JJazzLab is described as 'Free Midi-based application which automatically generates backing tracks (a musical accompaniment) for any song. It’s a jam buddy to have fun improvising, learn new stuff or just practice your instrument. It’s also a great tool for teachers' and is a music production app in the audio & music category. There are more than 10 alternatives to JJazzLab for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best JJazzLab alternative is Impro-Visor, which is both free and Open Source. Other great apps like JJazzLab are Band-in-a-Box, ChordPulse, iReal Pro and Tonelib JAM.