"Adeline" is a song by British indie rock band alt-J. It is the sixth track and third and final single from their third studio album, Relaxer, and was released as a digital single on 24 May 2017 by Infectious Music and Atlantic Records. The song was written by Joe Newman, Gus Unger-Hamilton, Thom Sonny Green and produced by Charlie Andrew. The band adapted a melody from the soundtrack to The Thin Red Line by Hans Zimmer, who is credited on the song as a writer. The band described the song's narrative as "a Tasmanian devil falls in love with a woman as he watches her swim."

In an interview with NPR, the band said:

"Adeline" received favorable reviews from contemporary music critics. Samantha Lopez of Paste called it a "sweeping five-minute, multi-layered melody packed with classically trained instrumentals and symphonic textures"

The song was remixed by American metallic hardcore band Code Orange and was released as a single on 2 November 2017. It was released alongside a separate single for a remix of the Relaxer track "Hit Me Like That Snare", also remixed by Code Orange.

Credits adapted from Tidal

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