CAMBRIDGE - The rise of professional touring string quartets, with their predominantly Romantic-virtuosic performance practice, has perhaps limited our experience of that repertoire. So it was a tonic to hear the Sarasa Chamber Music Ensemble tackle a trio of quartets on Saturday night with a decidedly pre-Romantic sensibility.
Both the Sarasa stalwarts - artistic director and cellist Timothy Merton and violist Jennifer Stirling - and their guests - violinists Lisa Weiss and Kati Kyme - have extensive Baroque and period-instrument experience, and it showed in Mozart's B-flat major quartet, K. 172. The group adopted an early-music sound throughout: a lean, mentholated timbre, a prominent lack of vibrato, and miter-edged, full-bowed articulations. The approach did reveal the work's shortcomings; composed when Mozart was only 17, the quartet's discourse is decidedly tilted toward the violins, and the somewhat monochromatic quality resulted in a limited sonic range.