Adele has released her new single "When We Were Young."

The UK star's new track is taken from her smash hit album "25". It can be downloaded or streamed on iTunes, Spotify, Apple Music, Amazon and Google Play.

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The singer is about to launch her sell-out tour of the UK and Europe, beginning in Belfast on February 29. She will tour the US, Canada and Mexico later in the year. Additional live dates include scheduled performances at the Grammy Awards on February 15 and the Brit Awards on February 24.