Piano virtuosa Myra Hess performs Ludwig van Beethoven's Piano Sonata No. 23 in F minor, known as the "Appassionata", on stage in a concert hall. Hess performs only the first movement of the sonata.Piano virtuosa Myra Hess performs Ludwig van Beethoven's Piano Sonata No. 23 in F minor, known as the "Appassionata", on stage in a concert hall. Hess performs only the first movement of the sonata.