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A piano reference: chords, scales, theory. Full MIDI.

Piano chords, scales & theory. Full MIDI.

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Today at the piano

Monday, August 3, 2026.

Featured page

A♯ 7sus4

The A♯ 7sus4 chord is a four-note chord made up of A♯, D♯, E♯, and G♯.

On this day

1998 Alfred Schnittke, who wrote three piano sonatas and a piano quintet, died in Hamburg.

Term of the day

E Minor Blues Scale

The E Minor Blues scale contains six notes: E, G, A, B♭, B, and D.

Did you know

Most piano notes are struck on three strings; the lowest use two or one, for roughly 230 strings in total.

Piano by the numbers ›
Popular right nowA MinorC Dominant 7thG Dominant 7thD Dominant 7thF♯ MajorD Minor 7th

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.

Learn Piano: the step-by-step pathAn ordered course from your first notes through chords, scales and theory. No login required. Start here.Follow the pathChord 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

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