How to play B Chromatic Scale. This pattern consists of B, C, Db, Ebb, Eb, Fb, Gbb, Gb, Abb, Ab, Bbb, and Bb – with the degrees of R, b2, 2, b3, 3, 4, b5, 5, b6, 6, b7, and 7. Learn it on this free interactive fretboard. 11,368 patterns to choose from.