Hidden Sound 4
On Via della Costituzione, just after the intersection with Via Michelangelo, you can find a tall, thin object to make this sound with!
We don't know what color it will be, it depends on what advertisement is hanging there!

Drawing by Brian, 6 years old
Children's clues
It’s a “low rhythm sound,” you can also call it “tum tum cart.”
It’s made with a screen you “hit” with your hands, like a drum for the city.