The Black Keys, Radiohead, and Dr. Dre with Snoop Dogg will headline the upcoming 13th annual Coachella Valley Music and Arts Festival in Indio, CA.

2012 marks the first time that the festival will canvas two weekends in mid-April. More than 100 musical acts have already been booked for the six-day event, which will feature the same lineup both weekends — April 13-15 and April 20-22.

Festival organizers delivered the official lineup late yesterday, January 9. The full billing is listed by date below.

Billboard.com is reporting that the newly reunited Black Sabbath had been scheduled to headline Coachella 2012, as well. But the publication’s sources said the group was forced to back out when guitarist Tony Iommi revealed he had been diagnosed with lymphoma and would be seeking treatment.

Despite that last-minute shake-up, Coachella’s lineup will still feature its usual bevy of reunited acts to complement the top-liners and standard performers. This year’s reunion offerings include post-hardcore punk rockers At the Drive-In, alternative rock group Mazzy Star, and Brit-pop band Pulp.

Advance ticket sales for Coachella 2012 began last year for early birds willing to buy without the benefit of a festival lineup. If the Coachella site is any indicator, those blind sales were successful. General admission and VIP pass allotments for the first weekend are already listed as sold out.

Public onsales for remaining tickets begin this Friday, January 13, at 10 a.m. PST on Coachella’s official Web site. Remaining ticket options for the onsale are GA ($285) or VIP ($665) passes for the second weekend, or GA pass and shuttle combos ($335) for either weekend.

Single-day passes and paper tickets are not being offered. All passes are being issued in the form of RFID-secured wristbands, which Coachella first experimented with in 2011.

2011 marked the second-consecutive year that Coachella tickets sold out. According to festival promoter Goldenvoice, paid attendance at Coachella 2011 was at 75,000 people per day and ticket sales totaled $23 million. Coachella 2010 also drew attendees at a 75,000-per-day rate for a reported $21.7 million gross.

The festival’s recent sell-out success and booming popularity was a large factor in organizers’ decision to add a second weekend.

“The thought of this selling out super quick, and the only people who get to go are the people who bought the first minute or bought tickets for more than they sold for, that didn’t seem great to us,” Goldenvoice president Paul Tollett told the Los Angeles Times. “We didn’t want to go with more people and ruin the experience. We can’t add a midnight show, and we didn’t want to add another city or raise the ticket price. So we decided to add another weekend.”

Coachella 2012
(Listed by billing order. Artist lineup is subject to change.)

April 13 and 20: The Black Keys; Swedish House Mafia; Pulp; Refused; Arctic Monkeys; Mazzy Star; Afrojack; Explosions in the Sky; M83; Amon Tobin; Cat Power; Madness; Jimmy Cliff & Tim Armstrong; GIRLS; The Rapture; Madeon; M. Ward; The Horrors; Frank Ocean; James; Alesso; SebastiAn; Datsik; Yuck; Neon Indian; Dawes; The Black Angels; Death Grips; WU LYF; Breakbot; Atari Teenage Riot; Feed Me; GIVERS; Other Lives; Band of Skulls; R3hab; Wolf Gang; The Midnight Beast; EMA; Ximena Sariñana; Kendrick Lamar; The Dear Hunter; honeyhoney; Hello Seahorse!; The Sheepdogs; LA Riots

April 14 and 21: Radiohead; Bon Iver; The Shins; David Guetta; Noel Gallagher’s High Flying Birds; Kaskade; Miike Snow; Jeff Mangum; Sebastian Ingrosso; Andrew Bird; Feist; fIREHOSE; Godspeed You! Black Emperor; St. Vincent; Martin Solveig; Sub Focus; SBTRKT; Flying Lotus; Manchester Orchestra; Kasabian; AWOLNATION; Azealia Banks; Squeeze; A$AP Rocky; Buzzcocks; Kaiser Chiefs; Destroyer; The Head and the Heart; Laura Marling; tUnE yArDs; Grace Potter and the Nocturnals; Black Lips; The Big Pink; Childish Gambino; The Vaccines; Zeds Dead; Grouplove; Jacques Lu Cont; We Were Promised Jetpacks; Gary Clark Jr.; Borgore; Dragonette; We Are Augustines; Mt. Eden; Destructo; Suedehead; Keep Shelley in Athens; Pure Filth Sound

April 15 and 22: Dr. Dre & Snoop Dogg; At the Drive-In; Justice; Florence + The Machine; AVICII; La Roux; Beirut; The Weeknd; Girl Talk; The Hives; DJ Shadow; Calvin Harris; Nero; Wild Flag; Modeselektor; Dada Life; Porter Robinson; Santigold; Flux Pavilion & Dr. P; Gotye; Seun Kuti & Egypt 80; Beats Antique; Fitz and the Tantrums; araabMUZIK; Company Flow; Real Estate; Zedd; Le Bucherettes; Greg Ginn; The Growlers; NOISIA; Morgan Page; The Gaslamp Killer; First Aid Kit; Oberhofer; Lissie; Thunder Cat; Metronomy; Wild Beasts; Housse de Racket; Fanfarlo; Spector; Gardens & Villa; Airplane Boys; Sleeper Agent