Here's a look at various performances of La Mancha's stand-out song "The Impossible Dream."
The 2002 revival of Man of La Mancha performs on the Tony Awards.
Luther Vandross:
Donna Summer:
Audio of Elvis:
Samuel Ramey:
Jack Jones:
Diana Ross and the Supremes:
Audio of Linda Eder:
Aretha Franklin:
Brenda Lee:
Placido Domingo, Anna Netrebko and Rolando Villazon: