The Tucson Symphony MasterWorks Chamber Orchestra presents an all-Mozart program at West Social Center (1111 Via Arco Iris, Green Valley) at 7:30 p.m., Thursday, Feb. 4. $32 to $36. Call 625-0288, or visit www.gvrec.org for tickets or more information. The performance takes place again at St. Andrew's Presbyterian Church (7650 N. Paseo del Norte) at 8 p.m., Friday, Feb. 5. $20 adults; $5 for those younger than 18. Call 797-3959, ext. 2, or visit www.saaca.org for tickets or more information. The performance takes place again at Catalina Foothills High School (4300 E. Sunrise Drive) at 8 p.m., Saturday, Feb. 6; and 2 p.m., Sunday, Feb. 7. $30 to $40. Call 882-8585, or visit www.tucsonsymphony.org for tickets or more information.