Time to tune in, drop out, and don your best 1960s and 1970s attire and groove to psychedelic sounds. The vintage clothing veterans at Carytown’s Bygone’s are having a big birthday bash this weekend, and they’ll officially be opening their Psychedelic Back Room as well as holding a free dance party. There will be prizes to the best dressed attendees and maybe even a dance contest. Partygoers receive 10 percent off their attire. 9 p.m. bygonesvintage.com.