Pierre De Geyter

Pierre Chrétien De Geyter (French: [pjɛʁ kʁetjɛ̃ də ɡetɛʁ]; Flemish: [də ˈɣɛitər]; 8 October 1848 – 26 September 1932) was a Belgian-French socialist and a composer, known for writing the music of "The Internationale."

Read more about this composer on Wikipedia.