Houston Symphony Chamber Players Pianist Robert Spano, who's also guest-conducting the Houston Symphony in conjunction with the Houston Grand Opera's presentation of Billy Budd (see Friday), joins the Chamber Players for a program that includes Dvorak's String Quintet in G major; Poulenc's Trio for Piano, Oboe and Bassoon; and Shostakovich's Trio No. 2 for Violin, Cello and Piano. Showtime is 8 p.m. Stude Concert Hall at Rice University (entrance number 8, off University Boulevard). $15-$25 (Houston Ticket Center: 227-ARTS).
"A Little Day Music" Air Mail Special, a quartet made up of members of the Houston Symphony, performs pieces ranging from Mozart chamber works to Duke Ellington tunes at noon as part of DaCamera's brown-bag concert series, which continues the first Wednesday of each month, through May. The Grand Foyer at Wortham Center, 500 Texas, 237-1439. More info: 524-7601. Free.