# C♯ Minor Major 7th piano chord (C♯mMaj7) C♯mMaj7 contains C♯, E, G♯ and B♯. A minor triad with the major seventh added on top. C♯ and G♯ are black keys; E and B♯ are white. - Canonical page: https://piano.org/chords/minor-major-7th/c-sharp/ - Entity: chord:minor-major-7th:c-sharp - Notes: C♯ E G♯ B♯ - Formula: 1 ♭3 5 7 - Intervals from root: P1, m3, P5, M7 - Interval stack (semitones): 3 4 4 - Also written: C♯mMaj7, C#mMaj7, C♯ minor major 7th - Parameters: A440, 12-TET, 165 mm octave, spans centre to centre ## Construction | Degree | Note | Interval from root | Semitones | | --- | --- | --- | --- | | 1 | C♯ | Perfect unison | 0 | | ♭3 | E | Minor third | 3 | | 5 | G♯ | Perfect fifth | 7 | | 7 | B♯ | Major seventh | 11 | ## Fingering Rest your right hand over the notes with finger 2 on C♯, finger 3 on E, finger 4 on G♯, finger 5 on B♯. 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 | C♯ | C♯3 E3 G♯3 B♯4 | 7 | 11 st, 151 mm | | First inversion (C♯mMaj7/E) | E | E3 G♯3 B♯4 C♯4 | 6/5 | 9 st, 124 mm | | Second inversion (C♯mMaj7/G♯) | G♯ | G♯3 B♯4 C♯4 E4 | 4/3 | 8 st, 110 mm | | Third inversion (C♯mMaj7/B♯) | B♯ | B♯4 C♯4 E4 G♯4 | 4/2 | 8 st, 110 mm | ## Voicings (10) | Voicing | Notes | Span | Relation | Omits or adds | | --- | --- | --- | --- | --- | | Close, root position | C♯3 E3 G♯3 B♯4 | 11 st, 151 mm | identical | none | | Close, first inversion | E3 G♯3 B♯4 C♯4 | 9 st, 124 mm | identical | none | | Close, second inversion | G♯3 B♯4 C♯4 E4 | 8 st, 110 mm | identical | none | | Close, third inversion | B♯4 C♯4 E4 G♯4 | 8 st, 110 mm | identical | none | | Drop 2 | G♯2 C♯3 E3 B♯4 | 16 st, 220 mm | identical | none | | Drop 3 | E2 C♯3 G♯3 B♯4 | 20 st, 275 mm | identical | none | | Drop 2 and 4 | C♯2 G♯2 E3 B♯4 | 23 st, 316 mm | identical | none | | Shell, root 7 ♭3 | C♯2 B♯3 E3 | 15 st, 206 mm | subset | omits G♯ | | Guide tones, ♭3 and 7 | E3 B♯4 | 8 st, 110 mm | subset | omits C♯ and G♯ | | Rootless close | E3 G♯3 B♯4 | 8 st, 110 mm | subset | omits C♯ | ## One-edit neighbors | Becomes | Edit | Changes | Common tones | | --- | --- | --- | --- | | C♯m | 1 ♭3 5 | drops B♯ | 3 | | C♯maj7 | 1 3 5 7 | E becomes E♯ | 3 | | C♯m7 | 1 ♭3 5 ♭7 | B♯ becomes B | 3 | | C♯m6 | 1 ♭3 5 6 | B♯ becomes A♯ | 3 | | C♯maj9 | 1 3 5 7 9 | E becomes E♯, D♯ | 3 | | C♯m9 | 1 ♭3 5 ♭7 9 | B♯ becomes B, D♯ | 3 | | C♯ | 1 3 5 | E, B♯ becomes E♯ | 2 | | C♯dim | 1 ♭3 ♭5 | G♯, B♯ becomes G | 2 | | C♯sus2 | 1 2 5 | E, B♯ becomes D♯ | 2 | | C♯sus4 | 1 4 5 | E, B♯ becomes F♯ | 2 | | C♯7 | 1 3 5 ♭7 | E, B♯ becomes E♯, B | 2 | | C♯m7♭5 | 1 ♭3 ♭5 ♭7 | G♯, B♯ becomes G, B | 2 | ## Set theory - Absolute pitch classes: {1, 4, 8, 0} - Relative pitch classes: [0, 3, 7, 11] - Normal order: [0, 1, 4, 8] - Prime form: (0148) - Forte number: 4-19 - Interval vector: <101310> ## Frequencies (close root position) | Note | MIDI | Frequency | | --- | --- | --- | | C♯3 | 49 | 138.59 Hz | | E3 | 52 | 164.81 Hz | | G♯3 | 56 | 207.65 Hz | | B♯4 | 60 | 261.63 Hz | ## Questions and answers ### What notes are in C♯mMaj7? C♯mMaj7 contains C♯, E, G♯ and B♯. The formula is 1, ♭3, 5, 7. ### How do you play C♯mMaj7 on piano? Play C♯, E, G♯ and B♯ together. Right hand fingers 2, 3, 4, 5; left hand 5, 4, 3, 2. C♯ and G♯ are black keys; E and B♯ are white. ### What are the inversions of C♯mMaj7? 4 positions: root position C♯ E G♯ B♯, C♯mMaj7/E, C♯mMaj7/G♯, C♯mMaj7/B♯. ### What is the difference between C♯mMaj7 and C♯m? Drops B♯. 3 of the notes are shared. ### What is an easy C♯mMaj7 for small hands? The close, second inversion voicing, G♯3 B♯4 C♯4 E4, spans 8 semitones or about 110 mm. ### What are the frequencies of C♯mMaj7? From C♯3 at A440 in 12-TET: 138.59, 164.81, 207.65, 261.63 Hz. ### What is the set class of C♯mMaj7? Prime form (0148), Forte 4-19, interval vector <101310>. ### How do I transpose C♯mMaj7 to another key? Keep the 1, ♭3, 5, 7 formula on the new root. CmMaj7 is C, E♭, G, B; D♭mMaj7 is D♭, F♭, A♭, C. ### Is D♭mMaj7 the same as C♯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:c-sharp Last reviewed: 2026-08-12