Wilhelm Kempff (1895-1991) plays Beethoven's 6 Variations for piano "Nel cor più non mi sento" (WoO 70), an aria of the opera "La Molinara", composed by Giovanni Paisiello. The first representation of this opera was in 1788, and Beethoven heard it for the first time in 1795. Niccolò Paganini wrote the "Introduction and Variations on "Nel cor più non mi sento" for Solo Violin" as well.