Space plays and stops
- Notes and intervals
- E#m3G#m3Bm3D
E# Diminished 7, written E#dim7, is built from E#, G#, B and D: the root, minor 3rd, flat 5th and diminished 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.
In the progressions here, E#dim7 is the ♯i°7 of the Diminished Passing Turnaround in E and the ♯iv°7 of the Jazz Blues in B.