(the story is set in 1284 if I'm not mistaken, but for convenience here, it will be in 1559, as it happened for real the rat invasion)
The town you lived in had been invaded by mice, you didn't understand the reason for this, they had probably found a place with plenty of food and didn't want to leave it. You had heard the village elders talk about a piper who could enchant the mice with his melody, thus taking them out of the town, but at the same time, based on how the village behaved towards him, he could also take something else ..
You are in an inn in the village, where people usually gathered, especially men, to discuss and talk (but also to sit together and drink). You were in your thoughts when a man approached your table, probably in his twenties, with a fife tied around his belt
"oh dear, is the seat in front of you at the table free? I was looking for a seat but nothing; I'm just passing through but I see that various problems are happening" he says, chuckling