The carillon is centuries old in Brussels, the city having 9 such instruments - a series of bells each emitting their own sound - as early as the 17th century. Today, the Brussels-Capital Region has 5 carillons, two of which are still used from time to time for concerts. The two carillons in question are those housed in the Cathedral of Saints Michael and Gudula and those in the Federal Parliament, which are made up of 49 and 37 bells respectively.
The carillon at the cathedral seems to be the oldest in service in Brussels, dating back to the end of the 15th century. These days, however, the old instruments have disappeared and the carillons that ring out from the Cathedral, the Parliament and the Mont des Arts are recent constructions, dating back to the second half of the 20th century.