Barcelona's now-legendary electronic and experimental music festival always packs in one of the best, and most forward-looking, line-ups Europe has to offer.

Headliners: Underworld, M.I.A, Aphex Twin

Dates: 16 - 18 June

Location: Barcelona, Spain

Tickets:155 Euros, on sale now

Other line-up highlights:

Magnetic Man, Die Antwoord, The Human League, Dizzee Rascal, Cut Copy, James Murphy, Janelle Monáe, Paul Kalkbrenner, Chris Cunningham, Boys Noize, Four Tet, Katy B, Steve Reich + bcn216 + Synergy Vocals, Shackleton, James Holden, Nicolas Jaar, Trentemøller, A-Trak, Atmosphere, Annie Mac, Hype Williams, Yelawolf, Tyondai Braxton, Apparat Band, Actress, Yelle, Scuba, Benji B, Pearson Sound aka Ramadanman, Gilles Peterson, How To Dress Well, L-Vis 1990 b2b Bok Bok, Africa Hitech, Mary Anne Hobbs, Toddla T, oOoOO, Redlight feat. Ms. Dynamite & Dread MC, Egyptrixx, Toro Y Moi (full line-up here)

Official site

A chance to play?: Sort of. Right now Sonar are auctioning off the chance to play a 50 minute DJ set at this year's festival. Bidding starts at 1 Euro, but we imagine it'll end up going for a lot more... Full details here.

Sónar Pro: In 2010 the Sonar Pro event that runs alongside Sonar played host to gear demos and masterclasses from the likes of Pioneer, Steinberg, Yamaha, Ableton and Novation, among others. There's also an assortment of exclusive conferences and services for professionally accredited festival-goers. Check out our full preview for details.