Two days from now, Comedy Central geniuses Jon Stewart and Stephen Colbert will give their best Glenn Beck impression as they descend on the Nation’s Capitol for the Rally to Restore Sanity and/or Fear. Shockingly, though, it wasn’t until today that the the rally was officially approved by the National Park Service (man… wouldn’t that have sucked if they were denied?), so only now are we learning what the festivities will include (via The Daily Swarm).

As it relates to music, the rally will feature The Roots kicking things off at 12:00pm with a 40-minute performance.  Following an official welcome by Stewart and Colbert and readings from Sam Waterston (the guy from Law and Order), past Colbert Report performers and current collaborators Mavis Staples and Wilco frontman Jeff Tweedy will for play for 10 minutes. Then, around 2:15, country star Sheryl Crow will receive her own five minutes in the spotlight.

Better yet, there are several unannounced musical guests also included on the schedule (cough cough Bruce cough cough), so stay tuned for surprises. If you can’t attend the rally in person, you can watch it live online or on Comedy Central beginning at noon EST.