The All Things Go Music Festival brings Lucy Dacus and Doechii to town this weekend. Best Things to Do This Week and WeekendSeptember 22–28All Things Go Music Festival. This highly-anticipated fall music fest returns to Merriweather Post Pavilion this weekend. Now, the tradition fills the streets of downtown DC every year with ancestral fashions, Latin music, folk dance, and a lively parade on Constitution Avenue (Sat-Sun, free, Downtown). The Washington Ballet returns to CityCenterDC for a round of outdoor performances (Fri-Sat, free, Downtown).