The B-flat dominant seventh suspended fourth chord (B♭7sus4) is a four-note chord consisting of B♭, E♭, F, and A♭. It is formed by replacing the major third of the B♭ dominant seventh chord with a perfect fourth (E♭), resulting in a suspended chord that avoids a major or minor tonality. This chord is commonly used in various musical genres, including jazz, blues, and rock, to create a sense of tension and anticipation. The B-flat dominant seventh suspended fourth chord is often employed as a dominant function, providing a strong harmonic pull towards the tonic chord and adding a sense of unresolved tension to chord progressions. Its distinctive sound makes it a valuable addition to a musician’s harmonic vocabulary. The chord is typically notated as B♭7sus4 and can be played on various instruments, including piano, guitar, and ukulele. Its versatility and unique tonal quality make it a popular choice for composers and performers seeking to add depth and complexity to their music. Additionally, this chord is frequently used in tritone substitutions, where it replaces a dominant seventh chord a tritone away, providing smooth voice leading and harmonic interest. Its ability to create a sense of suspended resolution adds a dynamic element to musical compositions.
Name: B-flat dominant seventh suspended fourth chord
Notes: B♭, E♭, F, A♭
Intervals: 1, 4, 5, ♭7
Chord symbol: B♭7sus4
Alternative symbols: B♭7(sus4), B♭7sus
Type: Tetrad (four-note chord)
B-flat dominant seventh suspended fourth chord on the Staff
B-flat dominant seventh suspended fourth chord on Piano
B-flat dominant seventh suspended fourth chord on Guitar
B-flat dominant seventh suspended fourth 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.