Normally hosted by the Provincetown Unitarian Universalist Meeting House, Great Music on Sundays @5 presents its 23rd season, virtually, on Sundays, July 25th through September 12th. Each of the eight concerts will premiere on its YouTube channel at 5 p.m. Opening the series is “Broadway: Curtain Up!” with pianist and director John Thomas, as well as special guests Mary Abt, Jo Brisbane, Brian Calhoon, Arian Carlos, Ella Mae Dixon, Marcy Feller, Trish LaRose, Roxanne Layton, Pamela Murray, Phoebe Otis, Carolyn Rogers, John Strumwasser, and Jeff Tagen. Visit ptownmusic.com to make a donation.