Shortly after announcing Black Sabbath will headline this year's Lollapalooza festival in Chicago, three-day passes for the event sold out. Secondary ticket brokers are hoping music fans will turn to them for their ticket to the popular music festival.

Lollapalooza, taking place August 3-5 at famed Grant Park, brings music and culture to thousands of fans each year. According to Chicago-based radio station WBEZ 91.5 last year's 20th anniversary of Lollapalooza drew an estimated crowd of 270,000.

With just about three months to go and ticket sales already well underway, a lineup has finally been revealed for Lollapalooza's 20th anniversary. Eminem, Foo Fighters, Coldplay and Muse will headline the August 5-7 festivities in Chicago, IL.

Other acts atop the billing include My Morning Jacket, Deadmau5 and A Perfect Circle. The full lineup — with more than 120 performers and DJ acts — is available below. Exact performance dates and times have not yet been announced.

Feel-good indie duo Matt and Kim has announced plans for a lengthy tour of the United States and Canada this fall. The musical pair launches its venture on September 15 at The Westcott Theater in Syracuse, NY, and continues on the road through November 6 at Pearl Street Nightclub in Northampton, MA.

The 36-date itinerary includes performances on September 18 at the Majestic Theatre in Detroit, MI; September 24 at Ogden Theater in Denver, CO; October 2 at Henry Fonda Theater in Los Angeles, CA; October 12 at the House of Blues in New Orleans, LA; October 24 at the Starlight Ballroom in Philadelphia, PA; and November 4 at the House of Blues in Boston, MA.

No sooner had Lollapalooza 2009 ended than a special $60 early bird promotion for 2010 went up and sold out within minutes. The $60 promotion included admission to all three days of next year's event.

The special three-day souvenir pass for the festival's next edition, to be held August 6-8, went on sale last Friday, August 14, on the festival's official Web site. It is unknown how many of the $60 tickets went up for sale. Charlie Walker, a principal of Lollapalooza promoter C3 Presents, told TicketNews that festival numbers are not issued outside of final attendance.

Without a line-up confirmed, Lollapalooza tickets went on sale three weeks ago, but artists have now been officially announced. Depeche Mode, Tool, The Killers, Jane’s Addiction and the Beastie Boys, leaked earlier in the Chicago Tribune, will headline the longest running alternative music festival from August 7-9 in Grant Park in Chicago, IL.

Also confirmed among the more than 100 performers are Kings of Leaon, Lou Reed, Ben Harper and Relentless7, Thievery Corporation, Snoop Dogg, Rise Against, Andrew Bird, TV on the Radio, Vampire Weekend, The Decemberists, Neko Case, STS9 (Sound Tribe Sector 9), Animal Collective, Band of Horses, Of Montreal and Arctic Monkeys. The complete artist line-up can be found on the festival’s Web site.