Functional Harmony

Build chords & scales, identify from notes, or Ask in plain English. Instant music theory for practice.

Functional Harmony is a fast music theory desk for players and students.

Build chords and scales from a root and quality. Identify harmony from notes. Or just Ask—type a chord, scale, or note stack in plain English and jump straight to the answer.

SCALE FINDER • Choose a root and scale quality—major, minor, modes, pentatonic, and more • See every degree spelled clearly for practice and ear training • Perfect when you need a quick scale finder without flipping textbooks

CHORD BUILDER & CHORD ID • Spell major, minor, sevenths, suspended, augmented, diminished, and more • Stack notes in the Notes tab to identify chords and intervals (reverse lookup) • Piano-friendly note entry with accidentals—great as a chord identifier

ASK • Natural-language queries: “C major 7”, “F# dorian”, “C E G” • Live preview before you open Chords, Scales, or Notes • Built for homework, rehearsals, and songwriting sessions

WHY FUNCTIONAL HARMONY • Chords, scales, and note identification in one app • Clean, bottom-anchored controls designed for one-handed practice • No accounts, no clutter—just theory when you need it

Whether you call it a scale finder, chord identifier, or harmony lab, Functional Harmony keeps tonal music theory at your fingertips.