Murder in C-Sharp Minor

Barney is trying to get his saxophone out of hoc, but doesn't have the $50 he needs. He kills the man who has the sax, but the waiter who finds the body is blamed. He was told he was fired when he refused to pad customer's bills. At first he walked out, but found the body when he returned to ask to keep his job. Frank thinks the waiter is guilty, but the murder weapon seems an odd one for a waiter so he starts looking for saxophone players.