Nelly, P. Diddy, Crazy Town Performing At Source Awards

Ceremony also featuring Ja Rule, Mary J. Blige airs August 28 on UPN.

Nelly, Ja Rule, P. Diddy and Mary J. Blige will take the stage at this year's Source Awards, organizers announced Monday, as will Brooklyn's M.O.P., who will be rockin' the mic with Crazy Town of all people.

The August 20 ceremony will be taped at Miami Beach's Jackie Gleason Theater and will air August 28 on UPN. Additional performers and guests will be announced in the coming weeks, an awards spokesperson said.

Although the winners in the main music categories won't be revealed until the night of the show, it was also announced on Monday that LL Cool J will be given the Lifetime Achievement Award and Super Bowl MVP Ray Lewis will be crowned the Source Athlete of the Year.

Eminem and Outkast received the most nods, with five apiece, when nominees in 10 categories were announced last month (see "Eminem, Outkast Lead Source Awards Nominations"). The two acts will face off for Album of the Year and Single of the Year.