The 7b5 chord is formed by the intervals root (1), major third (3), diminished fifth (b5) and minor seventh (b7). In this chord thus sound the notes B♭, D, F♭ and A♭. To hear the B♭7b5, click on the chord diagram. To highlight some chords with a yellow background, click on top of the diagram. This selection can be saved by copying the link from the browser.