The xx rounded off their 'Night + Day' festival and takeover of London's Brixton Academy last night with a very special collaboration.

The band famously remixed Florence & the Machine's take on 'You Got the Love' back in 2009, and so it was only right to ask her to to join them as they performed it live.

Introducing her to the stage as 'a good friend of ours', Welch put in an energetic performance on the track, which was essentially a cover of a cover of a cover. Very meta.

Watch it below: