Classical/Opera

Tchaikovsky & Mendelssohn: George Li performs Tchaikovsky’s Piano Concerto No. 1. Presented by Houston Symphony. 8:30 p.m. Friday; free; Miller Outdoor Theatre, 6000 Hermann Park Drive; 713-224-4240, houstonsymphony.org. Texas Music Festival: One-month festival drawing international talent. Presented by the University of Houston Moores School of Music. Orchestra series concert 6:30 p.m. Saturday; Moores Opera House, University of Houston, 120 School of Music Building, entrance 16; $25 general admission, $15 students and seniors; 713-743-3313; tmf. uh.edu.