In November 2012, Barlow announced a concert tour,
Gary Barlow: In Concert, which sold out minutes after going on sale. During these shows, Barlow played across the UK, when he began to consider returning to the studio to write what would become his first full-length studio album in over 14 years. As he began writing material for the album,
Since I Saw You Last, he wrote "Let Me Go" and knew it should be the lead single. Barlow revealed in a TV documentary that "Let Me Go" was written about the loss of his stillborn daughter Poppy and the traumatic period in his life which left him and wife Dawn devastated. He said that the song keeps Poppy's "flame" alive and is a "celebration" of her. Barlow added: "I don't like there to be things that are unsaid really... and from that thing happening to my dad's passing, there's a lot of them in this record with me. It should be a celebration of that song because, in some respects, it's alive that record and those lyrics and what it relates to. It keeps a life and a flame in the whole thing". "Let Me Go" has been described as an acoustic guitar-driven song with a catchy chorus. It represents a change in musical style to Barlow's past material. He attributes this to his listening to musical influences such as
Johnny Cash when deciding which direction he wanted to take his record. He said: "I've always liked folky, acoustic music but I've never fully explored it. I turned back time and was listening to Johnny Cash and early
Elton John before I wrote 'Let Me Go'". Numerous music critics noted the "
Mumford & Sons vibe" and influence. ==Music video==