"One" is a song recorded by English recording artist Ed Sheeran for his second studio album, x (2014). Sheeran wrote the song immediately after releasing his debut album, + (2011). It marked the last occasion wherein Sheeran wrote about his former girlfriend, who inspired all the romantic compositions on +. "One" was produced by frequent collaborator Jake Gosling and its music was based primarily on acoustic guitar. Critics were generally positive toward the song; it was noted for its guitar-driven sound and Sheeran's use of falsetto. An accompanying video for "One" was shot in an empty Wembley Stadium and preceded the song's release on 16 May 2014. It was the first promotional single from x and its release was meant to counterbalance "Sing", the album's lead single issued to create hype a