Chamber Music Amarillo: The classical organization explores the “Mozart-Tchaikovsky Connection” in a special concert featuring horn player Guglielmo Manfredi, violinist Evgeny Zvonnikov, conductor Mark Bartley and the Amarillo Virtuosi. (7:30 p.m. Saturday; AmTech Career Academy, 3601 Plains Blvd.; tickets $40; 806-376-8782)