Simplify the following text for a Grade 7 native English-speaking person.
Original: MotÃ rhead are well-known in the professional wrestling community for performing popular wrestler Triple H 's entrance music , `` The Game '' , from Christmas 2000 .
Simplified: MotÃ rhead are famous to fans of professional wrestling for playing the theme music used by wrestler Triple H when he walks down to the wrestling ring . He started using the MotÃ rhead 's music in 2000 .