He also composed romances, songs, and cantatas. His most famous work is De Vlaemsche Leeuw (The Lion of Flanders), which was very popular and became the official national anthem of the Flemish Community on 6 July 1973.
He also created ballads, songs, and cantatas. His most celebrated creation is "De Vlaemsche Leeuw" (The Lion of Flanders), which became a popular national anthem for the Flemish Community on July 6, 1973.