Chord sequence
A♯m7 D♯7 G♯maj7
In every key
Four-note rootless voicings in their two forms, with the 3rd or the 7th on the bottom, played over the root.
Heard in G# major
All the chords
The most common cadence in jazz: a ii-V resolving to the major 7th tonic.
Over A#m7 · ii7
Mode 2 of Major
Over D#7 · V7
Mode 5 of Major
Over G#maj7 · Imaj7
The major scale and its modes are the most commonly used scales in western music.