Space plays and stops
- Notes and intervals
- DM3F#m3Am3CM3E
- Extends
- D Dominant 7
D Dominant 9, written D9, is built from D, F#, A, C and E: the root, major 3rd, 5th, minor 7th and 9th.
Its 3rd and 7th, F# and C, 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. Ab7, a tritone away, has the same two notes the other way up, so it can stand in for D9 as its tritone substitute.