Grapow played on the albums "Pink Bubbles Go Ape", "Chameleon", "Master of the Rings", "The Time of the Oath", "High Live", "Better Than Raw", "Metal Jukebox", and "The Dark Ride".
В Helloween его игру можно услышать на альбомах: "Pink Bubbles Go Ape", "Chameleon", "Master of the Rings", "The Time of the Oath", "High Live", "Better Than Raw", "Metal Jukebox" и "The Dark Ride".