C13 Dominant 7th
The C13 chord is built from the notes C – E – G – Bb – D – F – 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).
GFifth
Perfect fifth
Seven semitones — the most stable interval, reinforces the root.
BbSeventh
Minor seventh (♭7)
Ten semitones — the dominant/minor seventh. Adds bluesy tension (7, m7).
DExtension
Ninth (9)
A 9th — colorful extension a whole step above the octave.
FExtension
Eleventh (11)
An 11th — a suspended, airy color on top of the chord.
AExtension
Thirteenth (13)
A 13th — full, rich top extension.
🎼 Related scales
🎹 Modal analysis
This chord implies the Mixolydian scale; its characteristic note is the minor 7th (♭7).
🎸 Genres
Blues · Rock · Funk · Gospel