CSI by Woody Allen

"Inspector Ford burst into the study. On the floor was the body of Clifford Wheel, who apparently had been struck from behind with a croquet mallet. The position of the body indicated that the victim had been surprised in the act of singing "Sorrento" to his goldfish. Evidence showed there had been a terrible struggle that had been interrupted by phone calls, one a wrong number and one asking if the victim was interested in dance lessons."