Schubert’s Unfinished Symphony premiered 150 years ago. Stratus Chamber Orchestra (formerly the Musica Sacra Chamber Orchestra) performs Franz Schubert’s most famous orchestral work along with a rich offering of works by Milhaud, Wolf, and Respighi. Both concerts at 7:30pm. Nov 20 @ The Studio Loft @ Ellie Caulkins Opera House, 14th & Curtis. Tickets are free; donations encouraged. Nov 21 @ Augustana Lutheran Church, 5000 E. Alameda Ave, Denver. $15 – 25 – 303-388-4962 or augustanaarts.org.