Acoustic ballad appears on singer-songwriter's latest album 'Picking Up the Pieces'
"Jewel & The Gang" perform "Hollywood Swinging," "Ladies Night" and "Celebration" for Mash-Up Mondays
Country folkie makes her second appearance onstage with Foo Fighters in a week's time, to sing the Stevie Nicks/Tom Petty hit
'Pieces of You' singer rocks out to "Whole Lotta Love" in Phoenix
A Dolly Parton duet is included on deeply personal LP, due in September
Singer-songwriter and late-night comedian team for a funny reenactment of the "I Want it That Way" video
Watch the 'Hands' singer tackle the role of the charming Ms. Carter