Singers also perform Swift's "Is It Over Now?" and Carpenter’s "Please Please Please" during special Surprise Songs portion
Singer also plays acoustic rendition of In Rainbows' "Jigsaw Falling Into Place" at Auckland, New Zealand stop of solo tour
Singer pushes first U.S. trek to January following "heartbreaking loss" of former One Direction bandmate
"We will miss him terribly. We love you Liam," Harry Styles, Zayn Malik, Louis Tomlinson, and Niall Horan say in joint statement after band mate's death
Piano Man brings out Guns N' Roses singer for "Live and Let Die," Mayer for "This Is the Time" at the Intuit Dome
James Austin Johnson and Sarah Sherman's Gallagher brothers just can't get along in rare joint interview
"Everybody thought I was dead," actor says of near-death experience in interviews ahead of new memoir Sonny Boy
"He was the closest human to me for so long," Madonna writes in tribute to her brother. "It's hard to explain our bond"
"I’ve always seen myself a little less… evolved," singer explains of unusual biopic
Sony Music has also reportedly acquired the rights to the band's name and likeness