C#-maj7 Diminished
The C#-maj7 chord is built from the notes C# – E – G – B#.
Piano sound loads on first tap.
Also known as
C#-maj7b5C#dim(maj7)C#dimmaj7C#m(b5)maj7C#m(maj7b5)C#m7b5(maj7)
Chord tones, one by one
C#Root
Root
The fundamental note the chord is built on — C#.
EThird
Minor third
Three semitones — makes the chord minor (darker, sadder).
GFifth
Diminished fifth (♭5)
Six semitones — a flat fifth. Creates instability, typical of m7♭5 and diminished chords.
B#Seventh
Major seventh
Eleven semitones — a lush, jazzy seventh just below the octave (maj7).
🎼 Related scales
🎹 Modal analysis
This chord implies the Whole-half diminished scale.
🎸 Genres
Bebop jazz · Hard bop · Gypsy jazz