It's been months in the making, but the Diamond Jubilee song 'Sing' has finally been played.
Gary Barlow and Andrew Lloyd Webber joined forces to write the song to celebrate the Queen's Diamond Jubilee this year.
'Sing' was played for the first time on Chris Evans' BBC Radio 2 breakfast show on Friday morning with the songwriters plus Gareth Malone in the studio since the Military Wives sing on the track.
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Gary Barlow said the song involved 230 people from three different continents, adding: "The idea of this song was that we'd include the Commonwealth and we certainly have."
One rather famous person who features on the track is Prince Harry himself, whom Gary Barlow convinced to play the tambourine when they were both in Jamaica earlier this year.
The chorus includes the lines: "Sing it louder / Sing it clearer / Knowing everyone will hear ya / Make some noise / Find your voice tonight / Sing it stronger / Sing together / Make this moment last forever."
Queen Elizabeth II heard it before the rest of us, of course, as she was the one who commissioned the song from Gary Barlow and Andrew Lloyd Webber.
Lord Lloyd Webber said the Queen was as "charming and delightful" as ever when they played the video to her at the Palace.
Gary Barlow added the Queen was most interested in the stories of the people from the Commonwealth who feature in the video, and he revealed that "she was tapping along".
[Related article: Gary Barlow asks Prince Harry to sing on Diamond Jubilee song]
She was "very excited" that her grandson Prince Harry was part of the song, and Gary Barlow played Harry's tambourine section on its own. Well done Haz!
The track is released on May 28 and the video will have its world premiere tonight on The One Show.