The Recording Academy announced on Wednesday that Bruno Mars will perform at the 2017 Grammy's ceremony. This will be his first performance at the event since 2013. The lineup already includes John Legend, Metallica, Carrie Underwood, and Adele. More acts are expected to be announced in the coming weeks. Mars' latest album missed the cutoff for consideration this year, but he's nominated as a producer on Adele's bestselling album 25.