Space plays and stops
- Notes and intervals
- B#m3D#m3F#M3A#
B# Half Diminished, written B#m7b5, is built from B#, D#, F# and A#: the root, minor 3rd, flat 5th and minor 7th.
Its 3rd and 7th, D# and A#, 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.