Esther Nelson added a fourth live performance to the BLO’s season, using the extra production to highlight contemporary works by both up-and-coming as well as established composers. Through the “Opera Annex” initiative, the BLO brought opera out of the traditional theater space and into the world, holding productions inside a temple in Brookline, the JFK Library and Museum in Dorchester, Back Bay’s Park Plaza Castle, and the Steriti Memorial Rink in Boston’s North End, among other locations. – WBUR