Chord sequence
Bm7 E7 Amaj7 F♯7
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 A major
Chords 1 to 3
Bm7 E7 Amaj7
Over Bm7 · ii7
Mode 2 of Major
Over E7 · V7
Mode 5 of Major
Over Amaj7 · Imaj7
The major scale and its modes are the most commonly used scales in western music.
Over F#7 · V7/ii
Mode 5 of Melodic Minor