VIDEO : Benedict Cumberbatch Joins David Gilmour on Stage to Sing 'Comfortably Numb'

Benedict Cumberbatch showed off his pipes on Wednesday. Benedict Cumberbatch surprised a London audience Wednesday night when he took to the stage to sing "Comfortably Numb" with Pink Floyd's David Gilmour. The "Sherlock" star made his appearance at the Royal Albert Hall. Naturally, some members of the audience captured the moment for social media. The actor has expressed his fondness for music in past interviews.