The C dominant seventh chord (C7) is a pivotal harmonic element in Western music, characterized by its distinctive blend of tension and resolution. Comprising the notes C, E, G, and B♭, it is constructed by adding a minor seventh interval (B♭) to the basic C major triad (C, E, G). This addition introduces a tritone interval between E and B♭, creating a dissonant sound that seeks resolution. In tonal music, the C dominant seventh chord functions as the dominant (V) chord in the key of F major, naturally resolving to the tonic F major chord. Its role is crucial in establishing harmonic progressions that propel the music forward, making it a fundamental component in genres ranging from classical to contemporary.
Name: C dominant seventh chord
Symnonyms:: C major-minor seventh chord
Notes: C, E, G, B♭
Intervals: 1, 3, 5, ♭7
Chord symbol: C7
Type: Tetrad (four-note chord)
C dominant seventh chord on the Staff
C dominant seventh chord on Piano
C dominant seventh chord on Guitar
C dominant seventh chord on Ukulele
Rowan Ellis is a musician and educator with a passion for exploring the language of harmony and melody. With years of experience across classical, jazz, and contemporary styles, Rowan breaks down music theory into clear, practical insights. His goal is to make chords and scales less intimidating and more inspiring for every musician.