| http://www.w3.org/ns/prov#value | - Zwerdling performs with numerous opera companies, choruses, and orchestras, including Washington National Opera, Wolf Trap Opera, Boston Lyric Opera, Lake George Opera, Washington Concert Opera, Opera Boston, Ash Lawn Opera, Handel & Haydn Society, Washington Bach Consort, Baltimore Choral Arts Society, Washington Master Chorale, and Philharmonia Baroque.
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