Space plays and stops
- Notes and intervals
- A#M3C##m3E#2G4B#
- Extends
- A# Major 6
A# Major 6/9, written A#6/9, is built from A#, C##, E#, G and B#: the root, major 3rd, 5th, 6th and 9th.
Its 3rd and 6th, C## and G, 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.