Also included are works by Schubert, Schumann, Liszt, Wagner, Mahler, Copland and Stravinsky.

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Recently scholars have shown increased boldness in turning posthumous fragments into, for instance, performable tenth symphonies by Schubert and Beethoven and a seventh by Tchaikovsky.

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To make the evening a bit longer, the BLO grafted on a prelude with a related biblical subject: an English translation of "Hagar's Lament, " an early song by Franz Schubert, which depicts Sarah's handmaid Hagar, who has been driven into the desert by Sarah, mourning the imminent death of her son, Ishmael, from thirst.

WSJ: A Potent Biblical Bargain, Undermined | Clemency | Boston Lyric Opera | By Heidi Waleson

Musically the Dover Quartet, formed at the Curtis Institute in 2008, distinguished itself by playing Schubert with a level of nuance unexpected of musicians so young.

WSJ: The First Sounds of Spring | Savannah Music Festival | By Barrymore Laurence Scherer

Each of the five works in repertory is accompanied, in some measure, by the Orion String Quartet, which performs Mozart, Mendelessohn, Ravel and Schubert with winning expertise, despite being intruded on, at random moments, by the kinds of shtick Mr. Jones favors.

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The Schubert piece, sung with power, if not much nuance, by soprano Michelle Trainor, was more musically related to Mr. MacMillan's language than one might have expected, particularly since Sarah's aria had a similarly overwrought character.

WSJ: A Potent Biblical Bargain, Undermined | Clemency | Boston Lyric Opera | By Heidi Waleson