Justin Bieber, Dua Lipa, Zara Larsson and The 1975 will all be having a singsong in a live scenario as part of Radio 1's Live Lounge Month.
The news was announced via the medium of Twitter, Instagram and some pictures of popstars (and some boring people) with letters on them. There's more on all that here.
Justin Bieber and Usher will be doing their singing bit in Los Angeles, which is in America, while everyone else will just have to go to Maida Vale or wherever.
The other acts taking part/lucky enough to have a good radio plugger are Dua Lipa, Christine & The Queens, OneRepublic, Craig David, Twin Atlantic, Biffy Clyro, Izzy Bizu, Clean Bandit, Blossoms, Olly Murs, Jack Garratt, Chase And Status, Bastille, Charlie Puth, Martin Garrix, Gallant, Mura Masa, Michael Kiwanuka, Kano and Tom Odell.