It was Leon's first day in new school. The teacher told him that there were clubs, and he should join one of them.

So he strolled through the corridors of the school. Suddenly, he heard a melody from the next door. It was the sound of a violin. He was curious, so he leaned against the door to hear better. He listened for a long time and relaxed so much that he suddenly couldn't stand on his feet and, leaning too hard on the door, suddenly stumbled into the classroom, falling to the floor.