Bdtjtk

22 1 Over the Christmas break I heard this programme on BBC radio: Shine On You Crazy Diamond David Gilmour discusses his famous four-note motif B♭ F G E but what wasn't discussed and I wished had been was the first three chords of the song, which are: Gm G♭ B♭ In the first chord, the minor third of the chord is a B♭ note, which then serves as the major third of the subsequent G♭ major chord. And I see that Gm is the relative minor of B♭ major. But what function does each chord serve? Is there some sort of cadential preparation going on? It sounds nice, but not like classical harmony to me. cadence share | improve this question