:laugh:, I love this show & Hotori is my favorite too!!
(Her design looks so much like the 2nd sister in Yotsuba! by the way).
It's great that you can found a mature enough teacher (at least in this episode) who basically do not becomes the joke butt for his student.:laugh:
And the ED was pretty creative. I means drum with guitar, violin and that other instrument (that the name escaped me) in traditional Japanese (I guess) singing? Your rarely see such combination.