In French wedding tradition, a noisy post-wedding serenade is called a charivari.
A charivari was a communal performance of loud noise, often made with pots, pans, horns, bells, shouting, and singing. It could be directed at newlyweds, especially when the community considered a marriage unusual or socially controversial.
The custom belongs to a wider European tradition. Related practices appear under names such as chivaree in North America and rough music in parts of Britain and Ireland. These events could be playful congratulations, but they could also act as public criticism or mockery.
A charivari is therefore not simply another word for a wedding song. Its defining feature is the noisy, collective, sometimes unruly performance. In many places the practice later declined as wedding celebrations became more private and formally organized.