Legendary performer Wavy Gravy celebrates his 80th birthday this year, and he’s doing so in style! Not only will he host a celebration in California, but he’s also bringing the party East for a special guest appearance at a new event called Unlimited Devotion.

From June 10-11, Grateful Dead poster collector Scott Shapiro will showcase his collection at the Main Line Art Center in Haverford, PA, with a portion of the proceeds going to the Rex Foundation. “I have this beautiful, unique and interesting collection, and so few people get to see it. I wanted to share it with people who I know will truly love it,” said Shapiro. “That, and I have received so much from the Grateful Dead, that this is my way of giving something back,” he added in a statement.

Wavy Gravy will be a special event, and Splintered Sunlight will provide live music for the performance. With food trucks, movie screenings and more, this is one great celebration of both Wavy Gravy’s milestone birthday and all things Grateful cultured. For tickets and more information, you can head here.