C7 chord
The C dominant seventh chord (abbreviated "C7 chord") is a four-note chord consisting of the notes C, E, G, and B♭. The chord is formed by adding a minor seventh to a C major chord.
Name
C dominant seventh chord
Synonym
C major-minor seventh chord
Notes
C E G B♭
Intervals
1 3 5 ♭7
Chord symbol
C7
Type
tetrad (four-note chord)