Craig Smith leads Emmanuel Music and soloists, including Frederick Urrey, Jayne West, and Jeffrey Gall in Handel's final masterpiece, the oratorio "Jephtha," Saturday at 7:30 p.m. in Emmanuel Church. . . . Boston Bel Canto Opera diva Joanna Porackova sings arias from "Fidelio," "Norma," "Tristan und Isolde," and other works Saturday at 8 p.m. in Jordan Hall; Jonathan McPhee conducts the Longwood Symphony, with proceeds benefitting the AIDS Action Committee. . . . The Boston Chamber Music Society plays Hugo Wolf's "Italian" Serenade and works by Italian composers tonight at 7:30 in Jordan Hall and Sunday at 7:30 p.m. in Sanders Theatre. . . . The Boston Symphony Chamber Players offer music by Lutoslawski, Nielsen, and Dvorak Sunday at 3 p.m. in Jordan Hall. . . . Collage New Music, under David Hoose, offers works by Berio, Bernard Rands, Donald Sur, and others with guest soprano Janna Baty (star of Thomas Ades's scandalous "Powder Her Face" with Opera Unlimited last season) in the C. Walsh Theatre at Suffolk University Sunday at 7:30 p.m. . . . Jeffrey Rink conducts the Newton Symphony and a cast headed by Adina Aaron and Benjamin Warshawski in concert performance of Puccini's "La Boheme" Sunday at 7 p.m. in the Rashi School Auditorium in Newton Corner. . . . The Claremont Piano Trio plays Mozart and Mendelssohn Sunday at 1:30 p.m. in the Gardner Museum.
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