Carly Simon - "You're So Vain"
Disses (Allegedly): Warren Beatty, Dan Armstrong, Jim Hart
Carly Simon's "You're So Vain" is one of the great musical send offs to an ex-lover, a blistering take down of an arrogant former flame and reflection on youthful naivete. To be sure, it nails someone, but the identity of that someone has been subject to debate.
Once believed to be Mick Jagger, that rumor was shot down on a number of occasions by Simon (whose denial is possibly corroborated by Jagger's presence on the track as a backup vocalist).
The three prime suspects for Simon's ire are actor and 70s sex symbol Warren Beatty, guitarist, guitar-maker, and former Simon paramour Dan Armstrong, and ex-husband Jim Hart. Each of the three fits into the "letter clues" Simon has revealed over the years, the name of the man in question contains the letters A, E, and R (Armstrong's full name is Daniel Armstrong).
Regardless of the song's subject, "You're So Vain" remains a classic indictment of naive young lovers (Simon)