This weekend Taylor Swift was at the O2 arena in London and there was a surprise at the end of the night for her fans.
After putting on her best P.E. teacher face and warming the crowd up, she busted out the one and only Ed Sheeran!
They sang one of Ed’s tunes – Lego House – together and it was pretty amazing.
What did you think of their Lego House version? Let us know in the comment box below.
You can catch loads of Taylor Swift and Ed Sheeran tunes on Fun Kids. Tune in for more of your favourite popstars.
Remember, you can listen to Fun Kids on DAB Digital Radio in London and online across the UK! Click here to listen!