I'll support Mokou on the harmonica and Cirno on the recorder, but re: the harpsichord discussion - the harpsichord is a weak and outdated instrument, surpassed in every way by the piano. I would imagine Remilia has enough self-respect to follow fashion and get herself a concert grand. Steinway and Sons, obviously. Flandre gets a cabinet grand to practice on and she plays in duets with Remilia and she always gets that one bit wrong and Remilia gets huffy and Flandre tries her best and :3...I'm sorry, I don't know what came over me.