Melissa Etheridge delivers a soulful acoustic cover of Janis Joplin's "Piece of My Heart." James Taylor proves he can still hit the emotional buttons with "Fire and Rain." Lynyrd Skynyrd proves it doesn't get the joke and launches into "Free Bird." The Pretenders get time for three songs, but Chrissie Hynde's f-bomb in "Precious" is censored and she substitutes a Stevie Nicks reference for Brigitte Bardot in "Message of Love."