The song - produced by Pharrell Williams - will be the first single lifted from his upcoming second album x.
'Sing' had its world exclusive premiere on BBC Radio 1 this evening (April 7) and has since been uploaded to the Sheeran's official YouTube channel.
The 23-year-old has thanked fans for their positive response to the track on his Twitter page.
Thank you so much for all the positive feedback on SING, please keep sharing, preordering and downloading :) you guys are da bomb xx
— Ed Sheeran (@edsheeran) April 7, 2014
'Sing' is now on sale in all countries bar the UK, Ireland, Germany and Australia - where the track will be released as part of an EP in a month.
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Sheeran uploaded a teaser video to accompany the single over the weekend.
The singer has confirmed that x - which serves as a follow-up to his 2011 debut album + - will be released worldwide on June 23.
Sheeran debuted songs that are rumoured to feature on x at the Teenage Cancer Trust show last month.
He is also expected to play tracks from the new LP when he performs at Glastonbury Festival 2014.
