Karl Ulrich Schnabel, the son of the pianist Artur Schnabel, was one of the great master teachers of the 20th century. Richard Rhodes, an English pianist who had lessons with Karl Ulrich Schnabel for more than thirty years, set out the principles underlying Karl Ulrich Schnabel’s teaching of music. In his book he discusses Karl Ulrich Schnabel’s approach to piano compositions by Beethoven, Chopin, Mozart, Schubert, and Schumann.