I'm Not the Only One is a song recorded by English pop singer Sam Smith from their debut studio album, In the Lonely Hour (2014).
This song was written by Sam Smith with Jimmy Napes, who also produced the song along with Steve Fitzmaurice. Capitol Records released it to digital download on 31 August 2014 as the album's third single in the United Kingdom and on 24 September 2014 as the album's second single in the United States; an alternative version with American rapper A$AP Rocky was also released. A piano soul ballad, anchored by orchestral strings and a gospel structure, I'm Not the Only One deals with themes of infidelity in a relationship and was inspired by a marriage of someone Smith and Napes knew. It received a positive response from critics, who praised their emotional vocals and it's instrumentation. Commercially, the song was another success for Smith, becoming a top-three hit in the United Kingdom, a top-five hit in the United States, and a top-ten hit in over ten countries. A music video featuring actors Dianna Agron and Chris Messina was released on 1 August 2014 and it features content similar to the song's lyrics.
Samuel Frederick Smith (born 19 May 1992) is an English singer and songwriter. In October 2012, they were featured on Disclosure's breakthrough single Latch, which peaked at number eleven on the UK Singles Chart. They were featured on Naughty Boy's La La La, which became a number one single in May 2013. Smith's achievements include five Grammy Awards, three Brit Awards, three Billboard Music Awards, and an American Music Award, as well as a Golden Globe and an Academy Award. Smith is the first openly non-binary musician to both release a song that reached No. 1 at the Billboard Hot 100 and to win a Grammy Award.