Summary

Quartet is a jazz play-along app for iPhone, iPad, and Mac (M-series) that offers 650 jazz standards recorded by professional jazz musicians. It serves jazz instrumentalists and singers by providing customizable backing tracks for practice and performance.

Features

• 650 iconic jazz standards across six editions, recorded by 10 top jazz musicians
• Ability to mute your own instrument to play along
• Real-time key transposition (+/- 6 semitones)
• Real-time tempo adjustment (+/- 50%)
• Loop any section and slow down for practice
• Animated, full-screen chord diagrams synchronized with the music
• Save favorites and create multi-app playlists synced across devices
• Export mixes as stereo (m4a), multitrack, or PDF chord charts
• Eight alternative mixes per song and custom mixer controls
• Count-in options via metronome, hi-hat, or silent animation
• Transposition support for Bb and Eb instruments

Usage

Quartet is suitable for jazz musicians of all levels playing piano, guitar, saxophone, trumpet, bass, drums, and also jazz singers. It is used for both practicing and live performance backing tracks.

Licensing and Platforms

The app is sold as a one-time purchase with no subscriptions or in-app purchases. All content is royalty-free. It runs on iOS devices and Macs with M-series processors at no additional cost.

Musicians and Development

The backing tracks feature performances from well-known jazz musicians with substantial recording and performing credits. The app is developed by Epic Apps with technical direction by Danny Bravo and UI/UX design by Polly Taylor.