Hip hop icons – and soon to be Broadway musical subjects – Run-DMC will be back Raising Hell in 2010.

The New York crew has just been announced on the line-up for the third annual Roots Picnic in Philadelphia, Pennsylvania this June. The festival – curated by the world’s greatest hip hop band The Roots – secured Public Enemy for last year’s gathering, so the precedent was set.

As well as acting as backing band for Run-DMC, the Roots members will air a couple of side-projects: Questlove’s drums-and-DJ combo with Jazzy Jeff, and Black Thought’s Money Making Jam Boys posse. The rest of the line-up so far includes well-heeled Brooklynites Vampire Weekend and Stones Throw soul man Mayer Hawthorne.