The Buffalo Chamber Music Society is welcoming the Brentano String Quartet this week. The group is named after the influential Brentano clan that was a big influence on Beethoven's life -- Beethoven's mysterious "Immortal Beloved" is said to have been Antonie von Birkenstock Brentano, the Viennese noblewoman who married into the family.

Known for its accomplishments and rich sound, the Brentano String Quartet has collaborated with such musical luminaries as soprano Jessye Norman, pianist Richard Goode and pianist Mitsuko Uchida. It is the first-ever string quartet in residence at Princeton University.

On their visit to Buffalo, the Brentanos are playing three old masters and one new one. The night starts with Haydn's Quartet in D Minor, Op. 103, and also includes Schubert's famous "Quartettsatz," or quartet fragment. The night ends with the lovely String Quartet by Claude Debussy.

The new master is Louis Andriessen. The quartet will play his "...miserere...," composed in 2006.

The concert takes place at 8 p.m. Tuesday in the Mary Seaton Room of Kleinhans Music Hall. Admission is $20 at the door. For information, call 462-4939.

-- Mary Kunz Goldman