Original: Ultratop 50 singles, often just Ultratop 50, is the weekly chart of fifty best-selling singles in Flanders, Belgium, and is produced and published by the Ultratop organization.
Simplified: Ultratop 50 singles, often called Ultratop 50, is the weekly chart of fifty best-selling singles in Flanders, Belgium. Ultratop 50 and is produced and published by the Ultratop organization.