Very funny Audiophile, I should have elaborated. What I had in mind, when I initiated this thread, was more of an exploration of the standards which are performed by more than one mainstream artist, not so much the singles which are, and probably always will be, performed by one artist". Examples of standards might include: "Mack the Knife", "Send in the Clowns", "Green Dolphin Street", "I Remember You". You know, the classics that everyone seems to want to take a crack at but that only one artist, in your opinion, nailed.