Skip to content
piano.org
An open reference for piano: chords, scales, theory and ear training
/

Play, and see what it is

Press any keys and this names the note, interval, chord, scale, or mode.
Play something. It gets named here.

One note names the note. Two name the interval. Three or more name the chord. Run five or more and the scale or mode appears too.

C1C2C3C4C5C6C7C8

Click keys to pin them · computer keys A–; play from C4 (Z/X shifts the octave) · Esc clears pinned notes

MIDI…
Play on screen or connect a MIDI keyboard. Sound plays only when you ask it to.

The index

Look anything up directly, in both enharmonic spellings, C♯ and D♭ alike.

ChordsEvery chord type in every key, triads to altered dominantsScalesMajor, minor, pentatonic, blues, bebop and beyondModesEvery mode, in every keyKey signaturesEvery key, its sharps and flats, relatives and parallelsProgressionsCadences and the progressions behind real music

Learn and practice

The reference is for looking things up; these are for getting better.

Chord FinderPlay or click any combination of notes and see what chord it makes.Open the toolChord and Scale MasteryGuided series that read like short books, from what is a chord to altered harmony.Start readingPractice RoomConnect a MIDI keyboard and get graded feedback on timing, evenness and accuracy.Enter the roomCircle of FifthsThe interactive wheel: keys, relatives, and how they connect.Explore it

Who writes this

Justin Evans at the piano

Maintained on nights and weekends by Justin Evans, a pianist of 25 years. Report a mistake

About JustinBecome a contributorContact

The Piano Deck

A deck of cards that teach the patterns behind every chord.
A structured deck for learning the keyboard’s geometry. No subscription required.
Learn more