Claim: One More Light featured the songwriting of Julia Michaels.

`` Heavy '' is a song by American rock band Linkin Park , featuring guest vocals from American pop singer and songwriter Kiiara . The song is the first single from their seventh studio album , One More Light . The song was written by Linkin Park members Chester Bennington , Brad Delson , and Mike Shinoda , alongside Julia Michaels and Justin Tranter . The single was released for download on February 16 , 2017 , and was premiered on radio on February 21 .