Small daily reps, at your edge

Turn music theory into muscle memory.

Become fluent in chords. Play with anyone or improvise solo.

Chord game+Scale practice+Ear training
Runs in your browser · any MIDI keyboard
Practice at your edge, without thinking about it

Deliberate practice just outside your comfort zone is 100x better than mindless noodling. Penny automatically introduces new material as you improve.

An optional timer to move you along

20 minutes a day is better than 3 hours once a week. Don’t have 20 minutes? Set the timer to 10. It divides your time between skills and keeps you moving.