April 19: : The bicentennial of Mendelssohn's birth will be celebrated by Pro Musica Rara with his Octet, a lyrical feast for strings performed on period instruments by some of the ensemble's best players, who will also dig into some Bach. Towson University's Center for the Arts, Osler and Cross Campus drives. Admission fee. 410-728-2820 or promusicarara.org.
April 30: : Exceptional mezzo-soprano Anne Sofie von Otter will join violinist Daniel Hope and pianist Bengt Forsberg for a poignant program of music by composers who were interned at Theresienstadt, a holding ground for Auschwitz. Music Center at Strathmore, 5301 Tuckerman Lane, North Bethesda. Admission fee. 301-581-5100, strathmore.org.
May 1-9: : The demise of the Baltimore Opera Company makes the city's smaller operatic ensembles more valuable than ever. A case in point is Opera Vivente, which presents a new production of Britten's gentle comedy Albert Herring, starring tenor Adam Caughey. Emmanuel Episcopal Church, 801 Cathedral St. Admission fee. 410-547-7997 or operavivente.org.
