alan henry spenner ( 7 may 1948 -- 11 august 1991 ) was a british bass player who performed with wynder k. frog , the grease band , abc , david coverdale , david soul , joe cocker , lynda carter , peter frampton , ted nugent , mick taylor , murray head , kokomo , roxy music , and played on the original 1970 concept album jesus christ superstar .