Gerhard Frommel (1906-1984) - Piano Sonata Nº 1 in F sharp minor Op. 6 (1931)

Gerhard Frommel (1906-1984) - Piano Sonata Nº 2 in F Major Op. 10 (1935)

Gerhard Frommel (1906-1984) - Piano Sonata Nº 3 in E Major Op. 15 ''Sisina'' (1940-41)