Pop star performs 'Suit & Tie' and 'Pusher Love Girl' from new album
'I feel pretty used by the music industry,' says country singer
The reunited band plays its first show together since 2009
Kelly Rowland and Michelle Williams join the singer for a trio of songs, including 'Single Ladies'
The band plans to write new material while in Sin City
'The truth is, we're all gonna die. Well, maybe I won't'
Mystical Weapons also features Deerhoof drummer
Singer's new album, 'The 20/20 Experience,' due this year
'I have to be on the edge of my abilities,' says musician of working with films
Avicii, Swedish House Mafia and Tiesto also on the bill for EDM blowout
Documentary set to debut at Sundance this month
Season Three's new champion discusses her future
She performs with the Killers, Kelly Clarkson and Avril Lavigne on finale
'It's a different pace than anything we've put out before'
'I'm feeling the pain of the people that love my music'