The B dominant seventh chord, often abbreviated as B7, is a four-note chord that plays a pivotal role in Western music, especially in blues, jazz, and rock genres. It consists of the notes B (root), D♯ (major third), F♯ (perfect fifth), and A (minor seventh), forming a major triad with an added minor seventh. This chord introduces a sense of tension due to the tritone interval between the D♯ and A notes, creating a desire for resolution. Typically, the B dominant seventh chord functions as the V7 chord in the key of E major, leading naturally to the tonic E major chord. On the guitar, it is often played in open position or as a barre chord, providing a bright and assertive sound that drives musical progressions forward. Its versatility and distinctive character make it a fundamental component of many musical styles.
Name: B dominant seventh chord
Symnonyms:: B major-minor seventh chord
Notes: B, D♯, F♯, A
Intervals: 1, 3, 5, ♭7
Chord symbol: B7
Type: Tetrad (four-note chord)
B dominant seventh chord on the Staff
B dominant seventh chord on Piano
B dominant seventh chord on Guitar
B 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.