CLASSICAL | First Inversion performs Vivaldi and Hasse 

RV 807 may sound like a sports car model, but if you're a lover of baroque music, RV 807 may have much greater significance: that's the catalogue number assigned to a recently rediscovered setting of Psalm 109 ("Dixit Dominus") by Antonio Vivaldi. It came to light only in 2005, and was revealed as a major Vivaldi work, "with scintillating solos and harmonically rich choruses." Those are the words of conductor Lee Wright, who leads the New York premiere of Vivaldi's "Dixit Dominus" RV 708 this weekend with First Inversion and a group of six outstanding vocal soloists. The all-baroque program includes another beautiful rarity: a "Miserere," a setting of Psalm 51, by the once-celebrated North German composer Johann Adolph Hasse, a contemporary of J.S. Bach. Instrumental works by Bach (an organ concerto modeled on a sonata by Vivaldi) and Handel (the popular "Entrance of the Queen of Sheba") round out a very appealing program — part of the 2015 Rochester Early Music Festival.

First Inversion performs Saturday, November 14, at 8 p.m.; and Sunday, November 15, at 4 p.m., at Downtown United Presbyterian Church, 121 North Fitzhugh Street. $10-$20. 520-2003; firstinversion.org.