"Deadcrush" is a song by British indie rock band alt-J. It is the fifth track and fourth single from their third studio album, Relaxer, and was released as a digital single on 12 July 2017 by Infectious Music and Atlantic Records. The song was written by Joe Newman, Gus Unger-Hamiltion, and Thom Sonny Green and produced by Charlie Andrew. The song's title is based on a game the band played where they asked the question, "What historical figure would I want to take on a date if she were alive today?", and so the name "Deadcrush" is based on someone's "dead crush". It features vocals from Ellie Rowsell of Wolf Alice. The song was also featured in the soundtrack for FIFA 18.