Cmaj13b5 Major 7th
The Cmaj13b5 chord is built from the notes C – E – Gb – B – D – A.
Piano sound loads on first tap.
Chord tones, one by one
CRoot
Root
The fundamental note the chord is built on — C.
EThird
Major third
Four semitones — makes the chord major (brighter, happier).
GbFifth
Diminished fifth (♭5)
Six semitones — a flat fifth. Creates instability, typical of m7♭5 and diminished chords.
BSeventh
Major seventh
Eleven semitones — a lush, jazzy seventh just below the octave (maj7).
DExtension
Ninth (9)
A 9th — colorful extension a whole step above the octave.
AExtension
Thirteenth (13)
A 13th — full, rich top extension.
🎼 Related scales
🎹 Modal analysis
This chord implies the Lydian scale; its characteristic note is the bright, floating ♯11.
🎸 Genres
Film & TV scoring · Modal jazz · Impressionism