A♭ Dorian Mode

Notes in the A♭ Dorian Mode

Interval Pattern

Chords Built on Scale Degrees

Key Signature

4 ♭ — The A♭ key signature uses B♭, E♭, A♭, D♭.

A♭ Dorian Mode in Practice

The A♭ Dorian Mode uses the key signature of 4 flats (B♭, E♭, A♭, D♭). Ab major has four flats and a full, somewhat dark sound. It is a common key in Romantic piano music and is frequently encountered in orchestral and choral writing. On guitar, A♭ positions offer comfortable transposing instrument keys for this scale.

The Dorian mode is a minor scale with a raised 6th degree, giving it a slightly brighter quality than natural minor. It is the characteristic sound of jazz and Celtic music. When played starting on A♭, the 7 notes are A♭, B♭, C♭, D♭, E♭, F, G♭. In this key the signature has 4 flats (B♭, E♭, A♭, D♭). Ab major is a favored key for Romantic piano music, where the mix of black and white keys creates a comfortable hand shape for flowing arpeggios. Pop ballads and R&B songs frequently use Ab because vocalists find the key sits well in the middle of their range, and the rich sonority suits emotional delivery.

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

Related Scales

Transposing Instruments: A♭ Dorian Mode

A♭ is a natural key for B♭ instruments (trumpet, clarinet, tenor sax), which sound a major second lower than written. B♭ instruments reading in C produce A♭ concert pitch. E♭ instruments (alto sax, baritone sax) reading in A♭ sound a major sixth lower.