A Happy Journey from Another World

A repeater from the conservatory of music traveled to a magical world due to an unexpected death. The magic driving method in this world is actually music, and the tools driven by magic are actually various musical instruments. However, people in this world don't seem to understand music. Musicians who can play a few notes are already quite famous magicians in the local area. As a result, he started a dreamlike cheating life in a different world, with the goal of returning home, but what surprised him most was the identity of the mysterious man...