E Major

🎹

Find a Chord

Type any chord name. See it. Hear it. Play it.

Open →

📖

Learn Theory

From your first chord to jazz harmony. Interactive guides with audio.

Open →

🎵

Explore Songs

Step-by-step guides to iconic piano pieces.

Open →

Featured

What Is a Chord?

The complete guide: triads, 7ths, extended — all with interactive keyboards and audio.

Featured

What Is an Interval?

14 sections, 9 interactive widgets. Master intervals and ear training.

Featured

Hidden Patterns

11 visual patterns that unlock the whole keyboard. See the piano differently.

Featured

Memory Pegs

16 pegs, 12 interactive widgets. Remember every chord shape forever.

Series

Chord Mastery Series

Triads → 7ths → Extended chords. The complete learning path.