Bb Half Diminished Chord: Bbdim7 (Also: Bb7b5) Intervals: m3, m3, M3 C, Eb, Gb, Bb Key: C F Bb Eb Ab Db Gb B E A D G Related Scales/Modes: A# Locrian The major scale and its modes is the most commonly-used scale in western music. G# Locrian #2 The melodic minor scale is similar to the major scale with only one differenc... Popular Voicings for Half Diminished (See All 5): Rooted I Rooted II Shell II Type I Type II