When conductor Lorin Maazel purchased a 550-acre farm in Virginia, his original intention was to have a place where he could escape the music world and live like a hermit. Instead, though, Maazel chose eventually to open his house “to local children in an expansive home-schooling project; to neighbors for chamber music concerts by the likes of stellar cellist Mstislav Rostropovich; and, lately, to music students and young professional singers, who have created a fully staged opera production.”