( CNN ) -- With the arrival of Lollapalooza 2012 , 100,000 attendees are expected to descend on Chicago 's Grant Park every day this weekend . The event has been sold out for several months , with The Black Keys , Red Hot Chili Peppers and Jack White headlining in addition to an Ozzy Osbourne-led reunion of Black Sabbath . But equally important to Lollapalooza founder Perry Farrell is his contingent of top DJs , which include Kaskade and Bassnectar . `` We are now blowing out our dance artists . We have two electronic dance musicians headlining . One is Justice , the other Avicii , '' he said with genuine excitement . Dance artists are the new rock stars , and they 're commanding rock star salaries . `` They 're making millions , '' Farrell said . `` The agents are asking the same fees they would ask for a rock artist because they 're saying , 'Look , we 're as attractive as a rock artist , so why should n't we be making the same amount of money ? ' '' Farrell 's band , Jane 's Addiction , wo n't be performing at Lolla this year , but on Saturday night they 'll be playing an after-party at the nearby Aragon Ballroom . Although tickets sold out in five minutes , fans of the pioneering alternative group will be able to see the show via a 360-degree live webcast . Lollapalooza has grown in size , but Farrell hopes to restore some of the intimacy with after-parties -- both official and unofficial ( at last count , there were 31 official after-parties listed on the Lollapalooza website ) . `` We 're taking the city , and we 're filling the arteries of the city and its nightclubs and ballrooms with our Lollapalooza audience and musicians . We 're taking it up a notch , and we 're taking it to four in the morning , '' he said . `` I just love that . It 's not just Grant Park -- the whole city is alive ! '' From 1991-1997 , Lollapalooza was a touring festival . It went on hiatus in 1998 , returned for one year in 2003 , then resurrected itself as a single location event in 2005 . It has been an annual fixture in Grant Park ever since . In 2011 , Farrell expanded the brand to Chile and Brazil in 2012 , and will be making a big announcement about Lollapalooza 's plans for expansion this Sunday . ( Hint : It 's not a Lollapalooza cruise . ) Back in Chicago , doors have barely opened on Lollapalooza 2012 , but wheeling and dealing is already in motion to secure next year 's lineup . `` You 've got to really work at it . You 've got to bring to the people something that they did n't expect , they wo n't forget and they 've never had before . It 's not easy to do that , '' Farrell said . `` That 's something you have to pull out of the ether . '' His dream headliner ? `` There are a couple of legendary rock groups that I would love to get . Most of the time , the reason that you do n't get to work with them is it 's their problem -- meaning they 're not together , or they broke up , or they hate each other or they 're not healthy . '' But in the meantime , Farrell already has one ace in the hole . `` I already know who 's going to be headlining next year , '' he said with a sly smile .
four attendees a day are expected to visit Lollapalooza this weekend . The fest has grown in size , but founder Jack White hopes after-parties will offer intimacy . Headliners include Jack White and The Black Keys . Farrell : `` We 're taking it up a notch , and we 're taking it to 100,000 in the morning ''