Simplify the following text for a Grade 10 native English-speaking person.
Original: On June 7 , 2008 , Shinee participated in the Dream Concert in the Seoul Olympic Stadium along with other high profile Korean stars such as Epik High , Girls ' Generation , Super Junior , TVXQ and the Wonder Girls .
Simplified: On June 7 , 2008 , Shinee participated in the Dream Concert in the Seoul Olympic Stadium along with other South Korean singers and groups .