Terrapin Crossroads has announced its first-ever Terrapin Prom. The event—which will have a “Dark Starry Night” theme—will take place on June 29. Those who attend must wear formal attire from the decade of their choice. Cocktails will be served at 6pm, with dinner at 7pm. The dance will begin at 8:30pm and will be DJed by David Martin’s House Party. Phil Lesh and the Terrapin Family Band will then play the after party at 10:30pm. Tickets to the Terrapin Prom are $75 and are already on sale at the venue’s box office. Tickets will be available online on Saturdy.