Pierre Degeyter (1848 - 1932) Pierre Chretien De Geyter (8 October 1848 – 26 September 1932) was a Belgian socialist (who later became a communist) and a composer, known for writing the music of The Internationale. Source : Wikipedia
Free sheet music of Pierre DegeyterSonate im Style des Domenico Scarlatti für das Pianoforte, Op. 788