"Water Under the Bridge" is a song recorded by English singer and songwriter Adele for her third studio album 25 (2015). The song was written by Adele Adkins and Greg Kurstin, while production of the song was provided by the latter. It was released as the fourth single from the album on 4 November 2016. Lyrically, the track is about a critical point in a relationship and trying to figure out if your partner is in or out. Musically, the song is a mid-tempo disco-pop song, featuring an electro-drum beat and a tropical, trip hop riff.