Broken Social Scene, Panda Bear, and The John Spencer Blues Explosion are the three biggest names added to an already rad lineup for the 2010 Pitchfork Music Festival.  They’ll be joining Pavement, Modest Mouse, and LCD Soundsystem to form the backbone of what could very well be the festival’s strongest set of acts to date.

Also announced today,  were the additions of El-P, Girls, Titus Andronicus , Bear in Heaven,  Freddie Gibbs, the Smith Westerns, Dam Funk, Cave, and Alla.

 Three day passes are already sold out, and with today’s bunch of bands including indie rock darlings Panda Bear and Broken Social Scene, there could be a run on those remaining single day tickets.