Space plays and stops
- Notes and intervals
- E#M3G##m3B#m3D#
E# Dominant 7, written E#7, is built from E#, G##, B# and D#: the root, major 3rd, 5th and minor 7th.
Its 3rd and 7th, G## and D#, 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. B7, a tritone away, has the same two notes the other way up, so it can stand in for E#7 as its tritone substitute.
In the progressions here, E#7 is the VII7 of the Coltrane Changes in F#.