 While Pink Floyd began by playing cover versions of American R & B songs , by 1966 they had carved out their own style of improvised rock and roll , which drew as much from improvised jazz . After Bob Klose departed from the band , the band 's direction changed . However , the change was not instantaneous , with more improvising on the guitars and keyboards . Mason reflected , " It always felt to me that most of the ideas were emanating from Syd at the time . " 
