There's a link between Can and BB. The bass player in Can is a fan of BBs, saying that "the reason so many metal players play so many notes is because they can't find the right one. BB King on the other hand can play the right one for a whole minute and it sounds like angels are singing". I got to agree with that. BB King can at any second go off on a great blues solo, but doesn't, you can hear the restraint in the musical tension of his playing. He shits on Steve Vai et al from oh so very high by simply plugging in.