Austin, Texas-based concert promoters C3 Presents have announced the line-up of Lollapalooza 2012, which will take over Chicago’s Grant Park 3-5 August, 2012. Now in its seventh year as a destination festival based in the Windy City, Lollapalooza began as a touring festival in 1991. It was the brainchild of Jane’s Addiction front man Perry Farrell and is credited, for better or worse, as a largely successful gambit to market “alternative music” to a large, mainstream audience. As in years past, the line-up of Lollapalooza 2012 offers up a mix of rock, dance, pop and hip-hop with a slightly adventurous edge. The headliners represent safe bets (Lollapalooza vets and recent Rock and Roll Hall of Fame inductees Red Hot Chili Peppers), successful acts that have retained their indie credibility (The Black Keys, Jack White), reunited trailblazers (Black Sabbath, At the Drive-In), polite college rock (Florence + The Machine, The Shins) and avant-garde ringers (The Weeknd, Sigur Ros). As with nearly all large-scale music festivals, the undercard features an exciting assortment of emerging and cult artists from across the globe. Stateside is recommending Swedish sister act First Aid Kit, Philadelphia psych rockers The War on Drugs, NYC’s Sharon Van Etten, Austin’s The Black Angels, Los Angeles soul singer Aloe Blacc, southern scorchers Alabama Shakes, French shoe gazers M83 and Cincinnati Sub Pop legends The Afghan Whigs. Lollapalooza three-day passes are currently fetching a pricey $230US, as the much more affordable “souvenir” and “early bird” passes sold out before the official line-up was announced.