RBC |Calling All Sonic Pilgrims! If you sing or play an instrument, come to the Tank for our Solstice Festival! This year the TANK returns to a tradition from pre-covid years, inviting all sonic pilgrims to celebrate the summer solstice in weekend-long solo presentations, group sound making and general jams. Starting Friday at 5 p.m. and continuing until Sunday at 5 p.m. Special ceremonies on Friday at sunset and Saturday at dawn and noon.…