Playboy Jazz Festival Lineup Revealed

The Roots, Naturally 7, Buddy Guy and Dianne Reeves will be among those playing at the event, which will once again emceed by Bill Cosby.

Musicians spanning from high school to the Rock and Roll Hall of Fame and Late Night will be coming together for the 33rd annual Playboy Jazz Festival.

Buddy Guy, Dianne Reeves, Naturally 7 and the Roots are among some of the performers revealed Thursday at Hugh Hefner's legendary Playboy Mansion during a press conference hosted by musician-comedian Bill Cosby and festival producer Darlene Chan.

The two-day festival, which takes place at the Hollywood Bowl on June 11-12, will feature about 20 separate musical acts -- from high school bands to Grammy-winning performers.

"We have one of the great sound systems in the whole world at the Hollywood Bowl. ... [There's] none better," Cosby said.

Cosby, an avid jazz aficionado, will reprise his role as the festival's Master of Ceremonies for the 30th time.

The Roots, better known outside the music world as the house band on NBC's Late Night With Jimmy Fallon, are nominated for five Grammys this year and will be making their debut at the Playboy Jazz Festival, headlining on Saturday, June 11.

Another major name group that will be returning to the festival is the unique a cappella group Naturally 7. Chan described them as the surprise hit of the 2010 show, a sentiment that Cosby shared.

"I've never seen anything like it. They've taken the human voice to another level," said Cosby.

The master of ceremonies will also be performing on the first day of the festival with his very own band, Cos of Good Music. Cosby will be drumming alongside fellow musicians Geri Allen, George Bohanon, Dwayne Burno, Ndugu Chancler, Anat Cohen and Babatunde Lea.

Apart from the big-name musicians that will be performing there will also be two local high schools opening both days of the festivals, which Cosby noted as essential.

"The thing that's missing from so many of our musicians [today] is that it has almost stopped where you took and embraced the young musician who is a genius and has all this potential, and put him up there with the guys who have scored what would be equivalent to Willie Mays and Mickey Mantle, and let the kid play and come out skinned up, and then go back and get skinned up again and evolve," Cosby said.

Tickets for the festival are on sale now.