"What Have You Done" is the first single fromDutchsymphonic metal/rockbandWithin Temptation's fourth studio albumThe Heart of Everything(2007). The song features guest vocals fromLife of Agony's lead singerMina Caputo(then known as Keith Caputo) and it was released as the album's firstsinglein early 2007 (see2007 in music). It became their first charting single inCanadaand in theUnited States. A new edit/version of the song was released in the U.S. throughiTuneson 26 June 2007.