"Rock Bottom" is a song by American actress and singer Hailee Steinfeld featuring American funk pop band DNCE. It was released on March 1, 2016, through Republic Records and Universal Music Group, as the second single from her debut extended play (EP), Haiz (2015). 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 and Robin.