Yussef Kamaal - Black FocusInspired by the "anything goes" spirit of '70s jazz funk, albums by Herbie Hancock or the Mahavishnu Orchestra, it's a loose template with plenty of room for experimentation. The duo, consisting of Yussef Dayes and Kamaal Williams (a. k. a. Henry Wu), has had little formal training. Instead, their musical tastes and approach to playing owe as much to Thelonious Monk's piano as they do to Kaidi Tatham's drum programming. "It's all about the drums and