While known mainly for mellow hits, British alt-rockers Coldplay amped up the energy with their upbeat hit "Viva La Vida,." The band then performed its hits "Paradise" and "Adventure of a Lifetime" before a black-leather-clad Mars, who headlined the halftime show in 2014, bounced in, singing and dancing through his hit "Uptown Funk!," But all eyes were on Beyonce, who sang and gyrated her way through her latest single "Formation" - a power anthem to race and feminism that debuted Saturday. Her Bruno Mars-partnered version of "Formation" was considerably lighter in tone than the video and single. The ad immediately following the show announced her "Formation" tour. Beyonce and Mars joined Coldplay frontman Chris Martin for a quick re-visit to "Uptown Funk!," ending on Coldplay's uplifting ballad "Fix You," with images of past halftime performers
