Tap anywhere to play jazz piano with bass and drums. Hold to sustain, release to let the notes fade. Jazz Tap takes care of the notes and chords—you bring the rhythm. No musical experience needed. Just open your browser and play.

What real task does your product handle with GPT-6 Astra?

I used GPT-6 Astra in Codex to turn my idea into a playable jazz instrument. As a jazz beginner, I worked with Astra to understand harmony, swing, and phrasing, then translate those concepts into code for piano melodies, bass lines, and drum patterns. We refined the result through listening and iteration. The finished app runs in the browser using the Web Audio API; Astra helped me learn and build it.

Hi everyone! I love jazz, and I wanted to make the joy of playing it accessible with just one finger. Jazz Tap starts with a quiet, blank screen. Your first tap brings in the band. You set the rhythm; the app handles the notes and chords. Hold for a longer note, or tap out a phrase and see where it takes you. Under the hood, it's a band arranged by code, as you play. Bass lines follow the chord changes, drum patterns and fills vary across the tune, and the band's dynamics respond to how actively you tap. Musical rules bring it all together. I'm a jazz beginner, so building Jazz Tap was also a way to learn. Working with GPT-6 Astra in Codex, I explored jazz harmony, swing, and phrasing, then translated what I learned into musical rules in code. Through listening and iteration, those rules became the trio you hear. Jazz Tap is the result of learning jazz and building an instrument at the same time. Give it a try—I'd love to hear how it feels to play!

What real task does your product handle with GPT-6 Astra?

Jazz Tap

Play jazz with just a tap.

Play jazz with just a tap.