Dawes, The Crane Wives, Jon Muq, and Rabbitology will also be on the bill, with MC Ryan Montbleau.
All proceeds will go to The National Immigration Justice Center.
Day three includes more than 60 ice carvings, a petting zoo during the afternoon, a 300-foot zipline, and the movie "Ice Age" at the Penn Theatre.
The book highlights young Black activists who fueled the civil rights movement.
The jazz and classical musician and composer will talk about America at 250, the role of music in our culture and society, and the ways that artists help shape our future.
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