Simplify the following text for a Grade 8 native English-speaking person.
Original: After years of slumping sales , the album 's competition with Kanye West 's Graduation and the resulting record breaking performances both albums displayed was considered to be a `` great day for hip hop . ''
Simplified: The album 's sales competition with Kanye West 's Graduation was considered to be a `` great day for hip hop '' .