"Farinelli and the King" is van Kampen's historical play about the relationship between Farinelli, the castrato, and the Spanish King Philippe V, first performed at Sam Wanamaker Playhouse in February and March 2015, and at the Duke of York's Theatre in the West End, London from September to December 2015, with Mark Rylance as Philippe V. It received six Olivier Award nominations including Best Play.