Sub Pop has announced plans to celebrate their 20th anniversary with the appropriately named SP20 festival set to take place July 12th and 13th at King County's Marymoor Park.

Though more artists are expected in the next few months, the initial lineup includes Green River (members of Pearl Jam), Flight of the Conchords, Iron & Wine, Wolf Parade, No Age, Pissed Jeans, Patton Oswalt (Ratatouille), Eugene Mirman, Todd Barry and others.

On April 1, 1988, the day the founders quit their jobs and rented a tiny office in the Terminal Sales Building in Seattle--was the day Sub Pop Records was born. To celebrate the label's twentieth birthday, Sub Pop will release a series of re–issues starting with Mudhoney's Superfuzz Bigmuff: Deluxe Edition (May 22, 2008), launch a limited run of the Sub Pop Singles Club, and throw a series of over–the–top birthday parties for itself this summer.

Sub Pop boasts one of the most notable catalogues in American independent music, with releases from acts like Nirvana, The Postal Service, Afghan Whigs, Chixdiggit, Sunny Day Real Estate, Sonic Youth, The Dwarves, The White Stripes, The Murder City Devils and countless others.