Space plays and stops
- Notes and intervals
- FM3A2CbM3Eb
- Extends
- F Dominant 7
F Dominant b5, written F7b5, is built from F, A, Cb and Eb: the root, major 3rd, flat 5th and minor 7th.
Its 3rd and 7th, A and Eb, are its guide tones: they say what kind of chord it is, so voicings are built around them and the root is often left to the bass. B7, a tritone away, has the same two notes the other way up, so it can stand in for F7b5 as its tritone substitute.