Barlow revealed that the music of the song was written in January during "an afternoon round at [Lloyd Webber's] house, [with a] couple of pianos and it was really good fun actually." He said that they "did all the melodies in an afternoon and then I waited to do the lyrics until I got to Kenya". Speaking about writing the track with Barlow, Lord Lloyd-Webber said: "We got together with embryonic ideas. Gary had an idea for the chorus, I had the idea for the verse, we both agreed that the message was about the Commonwealth. I was thinking 'anthem', but we had to involve all the people we could, and it had to be something very simple that people could learn. Working with Gary has been one of the great joys, he is such a fantastic songwriter, it was a completely new experience." The lyrics were written by Barlow whilst visiting villages in
Kenya, where Princess Elizabeth had been visiting when she was told that her father
King George VI had died and that she had ascended to the throne. Barlow said "She was in Kenya on holiday when she found out her father had died and she found out she was the Queen so I drove to this place called
Treetops and I wrote". Barlow went on to say that "She started her reign there and we started our record in that place" and it was fitting that the song would return to those origins. The final version of "Sing" was completed and mastered during April 2012, and was given its premiere radio play on 18 May 2012 on Chris Evans' BBC Radio 2 Breakfast Show. The final record features more than two-hundred singers and musicians, including a guest appearance from
Prince Harry on tambourine, the
African Children's Choir, the Kibera Drummers from Kenya as well as the
Military Wives Choir conducted by
Gareth Malone, well-known musicians such as reggae duo
Sly and Robbie, and ska guitarist
Ernest Ranglin. The song was handed over to the Queen at the beginning of May, with Barlow and Lloyd Webber presenting her a framed copy of the sheet music whilst also performing the song to her for the first time. As
Prince Charles had predicted, she was most interested in the people on the screen – 'What are they playing and where are they and who are they?’. To this Barlow told her "all the stories about the people and the places and where they lived and who they were and she loved it." ==Music video==