One Direction, "Little Things" (2012)
As a songwriter, Sheeran got in on the ground floor of the 1D world takeover, contributing "Moments" to the group's debut, Up All Night. Two of his songs appeared on the group's second album, including this sweetly teasing ballad, which he offered them at the very last minute. "I wrote that song with ... Fiona Bevan when I was 17 and we lost the song," Sheeran said at the time. Years later, Bevan found it and sent a copy to Sheeran, asking if he recalled writing it – he did and was in the studio with "the One Direction boys" at the time. According to Harry Styles, "We went in to record a different one of his and he said, 'I've written something else if you want to hear it.' ... We said, 'All right, we want to record that now.'"