# A♭ Minor Major 7th piano chord (A♭mMaj7) A♭mMaj7 contains A♭, C♭, E♭ and G. A minor triad with the major seventh added on top. A♭ and E♭ are black keys; C♭ and G are white. - Canonical page: https://piano.org/chords/minor-major-7th/a-flat/ - Entity: chord:minor-major-7th:a-flat - Notes: A♭ C♭ E♭ G - Formula: 1 ♭3 5 7 - Intervals from root: P1, m3, P5, M7 - Interval stack (semitones): 3 4 4 - Also written: A♭mMaj7, AbmMaj7, A♭ minor major 7th - Parameters: A440, 12-TET, 165 mm octave, spans centre to centre ## Construction | Degree | Note | Interval from root | Semitones | | --- | --- | --- | --- | | 1 | A♭ | Perfect unison | 0 | | ♭3 | C♭ | Minor third | 3 | | 5 | E♭ | Perfect fifth | 7 | | 7 | G | Major seventh | 11 | ## Fingering Rest your right hand over the notes with finger 2 on A♭, finger 3 on C♭, finger 4 on E♭, finger 5 on G. The left hand mirrors it. Right hand 2-3-4-5, left hand 5-4-3-2. Source: piano.org fingering method v1. ## Inversions | Position | Bass | Notes in order | Figured bass | Span | | --- | --- | --- | --- | --- | | Root position | A♭ | A♭3 C♭3 E♭4 G4 | 7 | 11 st, 151 mm | | First inversion (A♭mMaj7/C♭) | C♭ | C♭3 E♭4 G4 A♭4 | 6/5 | 9 st, 124 mm | | Second inversion (A♭mMaj7/E♭) | E♭ | E♭4 G4 A♭4 C♭4 | 4/3 | 8 st, 110 mm | | Third inversion (A♭mMaj7/G) | G | G4 A♭4 C♭4 E♭5 | 4/2 | 8 st, 110 mm | ## Voicings (10) | Voicing | Notes | Span | Relation | Omits or adds | | --- | --- | --- | --- | --- | | Close, root position | A♭3 C♭3 E♭4 G4 | 11 st, 151 mm | identical | none | | Close, first inversion | C♭3 E♭4 G4 A♭4 | 9 st, 124 mm | identical | none | | Close, second inversion | E♭4 G4 A♭4 C♭4 | 8 st, 110 mm | identical | none | | Close, third inversion | G4 A♭4 C♭4 E♭5 | 8 st, 110 mm | identical | none | | Drop 2 | E♭3 A♭3 C♭3 G4 | 16 st, 220 mm | identical | none | | Drop 3 | C♭2 A♭3 E♭4 G4 | 20 st, 275 mm | identical | none | | Drop 2 and 4 | A♭2 E♭3 C♭3 G4 | 23 st, 316 mm | identical | none | | Shell, root 7 ♭3 | A♭2 G3 C♭3 | 15 st, 206 mm | subset | omits E♭ | | Guide tones, ♭3 and 7 | C♭3 G4 | 8 st, 110 mm | subset | omits A♭ and E♭ | | Rootless close | C♭3 E♭4 G4 | 8 st, 110 mm | subset | omits A♭ | ## One-edit neighbors | Becomes | Edit | Changes | Common tones | | --- | --- | --- | --- | | A♭m | 1 ♭3 5 | drops G | 3 | | A♭maj7 | 1 3 5 7 | C♭ becomes C | 3 | | A♭m7 | 1 ♭3 5 ♭7 | G becomes G♭ | 3 | | A♭m6 | 1 ♭3 5 6 | G becomes F | 3 | | A♭maj9 | 1 3 5 7 9 | C♭ becomes C, B♭ | 3 | | A♭m9 | 1 ♭3 5 ♭7 9 | G becomes G♭, B♭ | 3 | | A♭ | 1 3 5 | C♭, G becomes C | 2 | | A♭dim | 1 ♭3 ♭5 | E♭, G becomes E♭♭ | 2 | | A♭sus2 | 1 2 5 | C♭, G becomes B♭ | 2 | | A♭sus4 | 1 4 5 | C♭, G becomes D♭ | 2 | | A♭7 | 1 3 5 ♭7 | C♭, G becomes C, G♭ | 2 | | A♭m7♭5 | 1 ♭3 ♭5 ♭7 | E♭, G becomes E♭♭, G♭ | 2 | ## Set theory - Absolute pitch classes: {8, 11, 3, 7} - Relative pitch classes: [0, 3, 7, 11] - Normal order: [7, 8, 11, 3] - Prime form: (0148) - Forte number: 4-19 - Interval vector: <101310> ## Frequencies (close root position) | Note | MIDI | Frequency | | --- | --- | --- | | A♭3 | 56 | 207.65 Hz | | C♭3 | 59 | 246.94 Hz | | E♭4 | 63 | 311.13 Hz | | G4 | 67 | 392.00 Hz | ## Questions and answers ### What notes are in A♭mMaj7? A♭mMaj7 contains A♭, C♭, E♭ and G. The formula is 1, ♭3, 5, 7. ### How do you play A♭mMaj7 on piano? Play A♭, C♭, E♭ and G together. Right hand fingers 2, 3, 4, 5; left hand 5, 4, 3, 2. A♭ and E♭ are black keys; C♭ and G are white. ### What are the inversions of A♭mMaj7? 4 positions: root position A♭ C♭ E♭ G, A♭mMaj7/C♭, A♭mMaj7/E♭, A♭mMaj7/G. ### What is the difference between A♭mMaj7 and A♭m? Drops G. 3 of the notes are shared. ### What is an easy A♭mMaj7 for small hands? The close, second inversion voicing, E♭4 G4 A♭4 C♭4, spans 8 semitones or about 110 mm. ### What are the frequencies of A♭mMaj7? From A♭3 at A440 in 12-TET: 207.65, 246.94, 311.13, 392.00 Hz. ### What is the set class of A♭mMaj7? Prime form (0148), Forte 4-19, interval vector <101310>. ### How do I transpose A♭mMaj7 to another key? Keep the 1, ♭3, 5, 7 formula on the new root. CmMaj7 is C, E♭, G, B; C♯mMaj7 is C♯, E, G♯, B♯. ### Is G♯mMaj7 the same as A♭mMaj7? Enharmonically yes: the same piano keys and the same sound, spelled differently. ## Provenance Every derived value above is computed by the piano.org theory kernel from the root, the quality and the stated parameters. Nothing is hand-entered per chord. Machine record: https://piano.org/api/knowledge/v1/entities/chord:minor-major-7th:a-flat Last reviewed: 2026-08-12