Sextet for two horns and string quartet in E-flat major, op. 81b / Ludwig van Beethoven (with Wing Lam Au, horn ; Changming Li and Jiazhi Zhang, violins ; Clara Li, viola ; Matt Armbruster, cello) -- Duet no. 1 for two horns in F major / Otto Nicolai (with Wing Lam Au) -- Sextet for winds in E-flat major, op. 71 / Ludwig van Beethoven (with Wing Lam Au, horn ; Luz Elena Sarmiento and Ivan Valbuena Paez, clarinets ; Ethan Lippert and Adam Drake, bassoons)