R. Kelly joins the party on the remix to his labelmate Britney Spears’ hit single “Till the World Ends.” Kellz, who’s currently on his nationwide “Love Letter” tour, keeps most of the beat intact, adding his own bubbly verse. “Slide up in this club, this beat’s got me in love,” he sings through a digital filter, climaxing with some high notes at the end. The party don’t stop.