After almost six hours of FireAid, Lady Gaga ended the historic Los Angeles event by debuting a new song co-written with her fiance Michael Polansky, an upbeat number that she said was “just for tonight.”

Lady Gaga is ramping up to the release of new album Mayhem, and she’s popping up all over the place, from December’s A Carpool Karaoke Christmas to next month’s SNL 50th anniversary concert. Also on her schedule as FireAid,

Billie Eilish sang with Green Day and Stevie Nicks thanked the firefighters who saved her home at two star-studded concerts on Thursday to raise money for wildfire relief in Los Angeles.