fminor Key of Brahms's Piano Sonata No. 3 Chopin's "Ballade in ___" Beethoven's "Appassionata" is in it "When the Levee Breaks" key "Smells Like Teen Spirit" key Key of Chopin's "Piano Concerto No. 2" Key of Chopin's Piano Concerto No. 2 Key with four flats Relative of A-flat major Key of Beethoven's "Appassionata" Sonata