BOSTON MIDSUMMER OPERA Susan Davenny Wyner conducts an intriguing double bill of rarely spotted 19th-century one-act operas: Donizetti’s “Il Campanello’’ and Mascagni’s “L’Amico Fritz.’’ With a cast that includes David Kravitz, Meredith Hansen, Jason Budd, Matthew Vickers, and Britt Brown. July 20-24, Arsenal Center for the Arts, Watertown. 617-923-8487, www.bostonmidsummeropera.org

TANGLEWOOD In Ozawa Hall, the keenly anticipated Festival of Contemporary Music sets sail on Thursday, dedicated to the memory of its curator, Steven Stucky. The FCM’s six concerts will be spread over five days, with works by Benjamin, Lindberg, Abrahamsen, and many others. Meanwhile in the Shed, conductors Andrew Davis and Juanjo Mena will preside over next weekend’s BSO programs, which, in addition to popular symphonic staples. The weekend’s roster of visiting guest soloists includes violinist Lisa Batiashvili and pianist Garrick Ohlsson. Lenox, 617-266-1200, www.tanglewood.org

BOSTON LANDMARKS ORCHESTRA Led by music director Christopher Wilkins, the Landmarks Orchestra continues its popular series of free Wednesday night concerts with a visually themed program highlighting the cultural legacy of Isabella Stewart Gardner. Images from the Gardner Museum’s collections will be projected, and Peggy Stuart Coolidge’s “Isabella’’ will receive its premiere.July 20, 7 p.m., Hatch Shell at the Esplanade. 617-987-2000, www.landmarks orchestra.orgJEREMY EICHLER

Jeremy Eichler can be reached at jeichler@globe.com