Space plays and stops
- Notes and intervals
- DM3F#M3A#2C
- Extends
- D Dominant 7
D Augmented 7, written D7#5, is built from D, F#, A# and C: the root, major 3rd, sharp 5th and minor 7th.
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 D7#5 as its tritone substitute.