A musician-curated database — every chord type, scale, and mode across all 12 keys. Vetted fingerings, audio playback, and an interactive keyboard. No AI filler, just accurate reference data.
Click any key to hear it. Toggle inversions, fingerings, and play modes — all right here.
Hands-on tools for learning, practicing, and exploring.
Click notes on the keyboard and instantly identify the chord. Works with any combination of notes.
Navigate keys, scales, and relative minors on an interactive wheel. See key signatures at a glance.
Timed chord recognition drills with MIDI or keyboard input. 10 chords per session, instant feedback.