Markus Großkopf (b. 1965) is a German bass player, one of the founders of the band Helloween and the creator of the project called Markus Grosskopf's Bassinvaders. If you have some tracks tagged 'Markus Grosskopf' you probably should correct them to Bassinvaders before you start scrobbling.

Read more about Markus Grosskopf on Last.fm.