Space plays and stops
- Notes and intervals
- EbM3Gm3Bbm3Dbm3Fb
- Extends
- Eb Dominant 7
Eb Dominant b9, written Eb7b9, is built from Eb, G, Bb, Db and Fb: the root, major 3rd, 5th, minor 7th and flat 9th.
Its 3rd and 7th, G and Db, 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. A7, a tritone away, has the same two notes the other way up, so it can stand in for Eb7b9 as its tritone substitute.
In the progressions here, Eb7b9 is the V7♭9 of the Minor ii-V to Major Progression in Ab.