"Rock Bottom" is a song by American actress and singer Hailee Steinfeld, featuring a guest appearance from American funk pop band DNCE. It was released on February 26, 2016, through Republic Records and Universal Music Group, as the second single from her debut extended play (EP), Haiz (2015). Along with her, Joe Jonas, the lead singer of the band, sings in the song. The song was written by Mattias Larsson, Robin Fredriksson, Julia Michaels, and Justin Tranter, with production being handled by Larsson and Fredriksson under their stage name Mattman & Robin.