Over Thanksgiving weekend, the SPCO delves into the many traditions woven into North American orchestral music — from the calm, soothing hymns and folk sound of George Gershwin to the sophisticated melodies and groovy jazz of Duke Ellington. Known for her rich voice and expressive interpretations, Twin Cities-based mezzo-soprano Clara Osowski returns to perform new arrangements of art songs by Charles Ives. The program concludes with Copland’s classic and sentimental Appalachian Spring, embodying the essence of American pastoral music