CAMBRIDGE - Do performances come in sizes? It's fuzzy math, and bigger isn't necessarily better: Small can mean exquisite, while grand might just be grandiose. Saturday's concert of Baroque repertoire by Dominique Labelle and Michael Chance - along with, making their Boston Early Music Festival debut, local stalwarts the Sarasa Ensemble - was interesting in how, with only four players and two singers, it ranged from polished miniature to operatic extra-large.
The first half featured Handel and Purcell, both composers men of the theater, but the performances were more objective or intimate than theatrical. While Handel's cantata "Tanti strali al sen mi scocchi" provided Labelle and Chance with floridly romantic opportunities, both music and singing were more elegant than torrid. Still, the combination clicked: Labelle curbed her rich soprano to match Chance's softer-edged countertenor, but their sentient, nuanced phrasing gave the music movement and sheen.