D#m7b5, G#7, C#m7, C7, Bmaj7

Analysis

Heard in B major

Progressions in these changes

• Chords 1 to 3

  Minor ii-V-I Progression in C#

  D#m7b5 G#7 C#m7

• Chords 3 to 5

  Tritone Sub ii-V-I Progression in B

  C#m7 C7 Bmaj7

Scales to play

• Over D#m7b5 · iiø7/ii

  D# Locrian

  Mode 7 of Major

• Over G#7 · V7/ii

  G# Mixolydian b6

  Mode 5 of Melodic Minor

• Over C#m7 · ii7

  C# Dorian

  Mode 2 of Major

• Over C7 · subV7

  C Lydian Dominant

  Mode 4 of Melodic Minor

• Over Bmaj7 · Imaj7

  B Ionian

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