Space plays and stops
- Notes and intervals
- GM3Bm3Dm3FM3A
- Extends
- G Dominant 7
G Dominant 9, written G9, is built from G, B, D, F and A: the root, major 3rd, 5th, minor 7th and 9th.
Its 3rd and 7th, B and F, 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. Db7, a tritone away, has the same two notes the other way up, so it can stand in for G9 as its tritone substitute.