Scales & harmony from A# / Bb

A theory reference for everything built on the tonic A# / Bb: the diatonic chords of A# major and A# natural minor, the progressions they form, and the scale types that start from A#.

Key relationships at a glance: the relative minor of A# major is G minor, and A# minor shares its key signature with C# major. Use the tables to compare harmony side by side, then jump to an instrument to hear the shapes under your fingers.