Jazz300 offers over 300 professional, royalty-free backing tracks performed by 21 world-class musicians, making it the ultimate play-along tool for musicians of all levels. With a recent update, users can now mute any main instrument in the tracks. Featuring artists like Kirk Whalum, Chris Standring, and Jason Rebello, the content spans jazz, blues, soul, funk, and pop genres. Users can seamlessly change keys, adjust tempo in real-time, access animated chord charts, and loop sections for practice. The app also allows exporting tracks as stereo audio files or multitrack projects for further customization.

Jazz300 stands out with its real-time key adjustment, tempo control, customizable track configurations, and a rich library of jazz standards and contemporary tracks. Musicians can enhance their skills with full-screen chord diagrams, create playlists, and access a variety of instrumental tracks for versatile play-along experiences.