577 Foundation will host Mixtape: Community Singing, led by Executive Director Heather Gallant, at the outdoor stage near the geodesic dome on Saturday, August 23, from 10:30 to 11:30 a.m. This is singing for the joy of it—no performances, no perfection— just playing, laughing and creating moments of community through song.All voices are welcome and no experience is needed.Reg...