Bm7b5, E7, Am7, Ab7, Gmaj7

Analysis

Heard in G major

Progressions in these changes

• Chords 1 to 3

  Minor ii-V-I Progression in A

  Bm7b5 E7 Am7

• Chords 3 to 5

  Tritone Sub ii-V-I Progression in G

  Am7 Ab7 Gmaj7

Scales to play

• Over Bm7b5 · iiø7/ii

  B Locrian

  Mode 7 of Major

• Over E7 · V7/ii

  E Mixolydian b6

  Mode 5 of Melodic Minor

• Over Am7 · ii7

  A Dorian

  Mode 2 of Major

• Over Ab7 · subV7

  Ab Lydian Dominant

  Mode 4 of Melodic Minor

• Over Gmaj7 · Imaj7

  G Ionian

  The major scale and its modes are the most commonly used scales in western music.