47. The biggest music instrument.

Is it a bass tuba ? I think. At least it is the biggest instrument of the Fanfare of Sous-Le-Bois playing in Pont-sur-Sambre. Maubeuge is about between 17km or 19 km far away from Pont-sur-Sambre. There are two roads that leads to Maubeuge.
Perle de Rosée.