In an interview with Zane Lowe for BBC Radio 1, promoting the first single, "Sing", Sheeran talked about getting in the studio with Pharrell and him "playing [Sheeran] a lot of things, and then it stuck on this one riff," which eventually became the basis of the track. He stated he has always been a fan of R&B, but was just "trying to find the right way to make it." Sheeran expressed wishes to create an entire album with Pharrell, and "Sing" was to be a song for that project, but several musical peers, including Elton John, Taylor Swift and Pharrell himself, urged Sheeran to release it with X. Justin Timberlake's debut album, Justified, was a favourite of Sheeran's, which he consciously tried to channel for "Sing". On working with Pharrell, Sheeran told MistaJam on BBC Radio 1Xtra that they had written two other songs together that were in the style he "usually did", but for "Sing" he was pushed "out of [his] comfort zone" which made the track stand out. Pharrell reportedly said that he wanted to "shake the world's view of [Sheeran] up" and make pioneering songs that no singer/songwriter has done before rather than just "a cool record". A remix of the track has been made with Korean recording artist Psy, and the music video for the song was based on a night out with the artist.
