Space plays and stops
- Notes and intervals
- FM3Am3Cm3Ebm3Gb
- Extends
- F Dominant 7
F Dominant b9, written F7b9, is built from F, A, C, Eb and Gb: the root, major 3rd, 5th, minor 7th and flat 9th.
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 F7b9 as its tritone substitute.
In the progressions here, F7b9 is the V7♭9 of the Minor ii-V to Major Progression in Bb.