Bb Blues Turnaround 6

Expanding a bit on last month's turnaround, this month's "minor third" turn features a series of altered chords. Observe how Bb9 moves to Db7#9, C9b5, and then B7#5#9 (note the contrary motion--two or more lines moving in opposite directions--that takes place in moving from C9b5 to B7#5#9. As mentioned last month, altered chords offer many possibilities, which warrant thorough investigation. See you next month.