Season Finale: With its rich, sweeping melodies and dynamic brass chorales, Sibelius’s Second Symphony vividly evokes the beauty of his native Finland. Icy Nordic landscapes are also heard in Rautavaara’s Cantus Arcticus, a haunting “concerto for birds and orchestra” that weaves recordings of birdsong into the orchestral tapestry. Julia Perry’s setting of the 13th-century Stabat Mater hymn adds a powerful …