 Halkes has enjoyed major A&R success with The Prodigy in recent years with the album "Invaders Must Die" on which he co-wrote the title track and the subsequent album "The Day Is My Enemy" on which he co-wrote three tracks.Halkes was one of the founders of independent record label XL Recordings where he signed and worked with acts such as House of Pain, SL2 and Liquid before taking up a position as a director at EMI and launching the Positiva label.The Positiva label enjoyed significant success under Halkes' leadership with artists such as Reel to Real, Alice Deejay, The Bucketheads and more and is now home to David Guetta and Deadmau5, amongst others.