Actor Benedict Cumberbatch, known for his roles in The Imitation Game, Sherlock, and more recently, Doctor Strange, joined David Gilmour at the Royal Albert Hall last night in London. The Oscar nominee joined the Pink Floyd singer/guitarist for a version of “Comfortably Numb.”

Gilmour is in the middle of a five-show stand at the Royal Albert Hall, supporting his most recent release Rattle The Lock from 2015. He will return to the stage on September 29th and 30th.

Thanks to YouTube user Anything Sherlock, we can watch the performance below: