The band that listens.

A live jazz trio in your pocket โ€” piano, upright bass and drums that play any chord chart you give them, and answer what you play.

Coming soon to the App Storefor iPhone and iPad
PocketTrio playing a Bb blues chart in dark mode Band settings: energy, hip voicings, comping density and drum fills The chord editor with a jazz chord keyboard

A rhythm section, not a metronome

โ—It listens

Turn on the mic and the trio pays attention โ€” play a line and the piano voices your note on top of its chords. Audio is analyzed live on your device and never recorded or stored.

โ—Six bands

Jazz Swing, Bossa Nova, Salsa, Reggae, Shuffle 12/8 and Afro 6/8 โ€” each with its own comping, bass feel and drum vocabulary.

โ—Shape the sound

Energy that builds chorus by chorus, hip voicings from clear triads to modern jazz harmony, comping density, drum fills, per-instrument mix and EQ.

โ—Write the changes

A chord keyboard built for jazz: every quality, alteration and slash chord โ€” repeats, endings and codas โ€” one tap per beat.

โ—Any tune

Start from real forms โ€” 12-bar blues to 32-bar AABA โ€” or import chord charts from the web in seconds.

โ—Private by design

No account, no ads, no tracking. Your charts live on your device. Read the privacy statement.

Support

Questions, bug reports, or a tune the band should handle better? Email jay105836@gmail.com and you'll hear back from the developer directly.