Coachella 2014 line-up: OutKast, Muse and Arcade Fire to headline festival Now in its 16th year, the two-weekend extravaganza will see the likes of Ellie Goulding, Lorde, Queens of the Stone Age and Bastille join Pharrell Williams, Skrillex, Calvin Harris and Rudimental on stage in California. Grammy Award-winning hip-hop duo OutKast are reuniting for the popular US festival, following in the footsteps of past Coachella reformers Iggy and the Stooges, Pixies and Portishead. The 90s MCs last released an album in 2006, Idlewild, and have been working on separate projects since. Big Boi has worked as a producer on Modest Mouse's next album and released two critically-acclaimed LPs, while Andre 3000 has collaborated with Frank Ocean and Beyoncé. OutKast's reunion at Coachella will mark the 20th anniversary of their debut album, Southernplayalisticadillacmuzik, hitting shelves in X in 1994. Coachella organisers announced the news on Twitter, posting a picture of the line-up with the caption "Share it like a polaroid picture!" in a nod to OutKast's hit "Hey Ya." Dance fans will be particularly pleased with the eclectic bill, with Flume, Martin Garrix, Alesso and Disclosure also booked to appear. Coachella takes place on the weekends of 11-13 and 18-20 April in the desert city of Indio, with the same line-up performing on both dates. Last year's festival was headlined by Blur, The Stone Roses, Phoenix and the Red Hot Chili Peppers. Tickets for Coachella go on sale on 10 January at coachella.com.