When they're not performing with either TASHI, or the Guarneri and Orion string quartets, the accomplished soloists of OPUS ONE join forces out of a warm mutual admiration for each another's artistry. They freely share in the excitement of performing the great music of their particular combination. In their most recent visit to Saint Paul Sunday, violinist Ida Kavafian, violist Steven Tenenbom, cellist Peter Wiley, and pianist Anne-Marie McDermott offer us some of the most spirited piano quartets in the repertoire — works of Mozart, Brahms, and Martinů —side by side with arresting new music of another collaborator, composer George Tsontakis.

Celebrated pianist Claude Frank is a living link to the great Romantics whose music he has enlivened for over half a century. This week he brings us works of two of them — Beethoven and Schumann — along with a beloved sonata of Mozart. Frank not only conveys a sense of these works' depth and beauty, but their bracing humanity as well. He concludes Beethoven's epic Opus 110 sonata, a signature work for pianist and composer alike.