ODYSSEY OPERA The latest rarity to be unearthed by this audacious company is Dvorak’s “Dimitrij,’’ an opera whose plot could almost be a sequel to Mussorgsky’s “Boris Godunov.’’ Gil Rose conducts a concert performance that will be the work’s Boston premiere. Sept. 16, 7:30 p.m., New England Conservatory’s Jordan Hall. 617-826-1626, www.odysseyopera.org

GRAND HARMONIE The period ensemble opens its fifth season with “Bohemian Rhapsody,’’ a concert that includes the first American performance of Dvorak’s Wind Serenade on original 19th-century wind instruments, as well as works by Hummel and Smetana. Sept. 17, 7:30 p.m., Second Church in Newton; Sept. 18, 7:30 p.m., St. Peter’s Episcopal Church, Cambridge. www.grandharmonie.org

PACIFICA QUARTET The ensemble (pictured) concludes its pairings of string quartets by Mozart and Britten with the former’s Quartet No. 15 in D minor (K. 421) and the latter’s Quartet No. 3. Sept. 18, 1:30 p.m., Isabella Stewart Gardner Museum. 617-278-5156, www.gardner museum.org

MIRIAM FRIED The violinist, a fixture on the New England Conservatory faculty, celebrates her 70th birthday with a two-concert marathon performance of all six of Bach’s Sonatas and Partitas for Solo Violin. Sept. 18, 4:30 p.m. and 7:30 p.m., New England Conservatory’s Jordan Hall. 617-585-1260, www.necmusic.edu/ concerts-events DAVID WEININGER

David Weininger can be reached at globeclassicalnotes@gmail.com. Follow him on Twitter @davidgweininger.