If you love medieval vocal music, you'll be fascinated by this unusual collection of mass movements written by two Italian composers– Matteo and Zaccara–that are juxtaposed and organized both to contrast their styles and to make programmatic sense. There's lots of fancy ornamentation and there are many dramatic moments, as well as sections of sweet, gentle lyricism–listen to Matteo's "Gloria," sung with heart- rending tenderness by soprano Jill Feldman. The singers are alternately accompanied by recorder, harp, fiddle, bells, and organ.
It is perhaps a truism that virtually all so-called great composers had a special preference for the viola as da braccio (on the arm, i.e. the modern instrument) or da gamba , a versatile instrument of the viol family that was a particular focus of Baroque composers. Indeed, the Sixth Brandenburg features pairs of both instruments, da braccio and da gamba, and what would the passions be without the solo work Bach includes for each? This may have been due to the fact that one of his employers, Duke Leopold of Saxony-Anhalt-Cöthen, liked to play it, but more likely Bach liked the instrument’s versatility and distinctive timbre.