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.
In addition to composing romances, songs, and cantatas, he wrote "De Vlaemsche Leeuw" (The Lion of Flanders). This work gained widespread popularity and was declared the official national anthem for the Flemish Community on July 6, 1973.