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Whilst playing a set at SXSW, singer/rapper Future premiered a previously unreleased track which is thought to be the original version of Beyonce's boozy smash 'Drunk in Love'. Watch him perform 'Good Morning' below.

Introducing the track, Future told the crowd: "I was recording with this producer by the name of Detail. We was working on 'Drunk in Love'...and we started working on this other record at the same time."

Indeed, the similarities between the two tracks are striking - the beat is the same, as is the refrain, with Future singing "I'm so horny, I'm so horny" instead of Bey's "I've been drinkin', I've been drinkin'". 

Watch Future perform 'Good Morning' at SXSW below:

'Good Morning' won't be appearing on Future's second album Honest, which is due for release next month. The album will feature previous singles 'Move That Dope' and 'Real and True', as well as guest appearances from the likes of Pharrell, Kanye West, Drake, Pusha T, Lil Wayne and Andre 3000.