The Northern Lights Choir, under the direction of Helen Demong, will perform music by Berstein, Copland, and premiere the concert version of Glenn McClure’s, “Adirondack Folk Opera,” this Friday, May 13th , 8 pm, St. Bernard’s Church in Saranac Lake, NY.  Tickets $12 at the doorListen to NPR interview including a song sample.  Glenn McClure Composer’s Notes: “This…