Jack White's new PBS documentary about the early American recording industry, 'American Epic', is set to air this weekend and ahead of it comes this duet between White and the legend that is Elton John.

'Two Fingers of Whiskey' is the creation that White and John managed to improv in one session and is a booze-themed raspy blues classic like they used to make back in the day and shows the two artists at their best.

White has plenty of other collaborations in the documentary so fingers crossed there's a surprise album about to be launched once the film airs in the US this Saturday.