Ultraman Taro: S1 E16 - The Monster's Flute Sings Ultraman Taro

Kenichi's classmate, Arihito, was practicing with his late grandfather's ocarina when the monster Okariyan suddenly appears. It turns out that his ocarina was made from Okariyan's tooth, and it showed up after hearing Arihito playing the ocarina. Kotaro comes up with a plan to lure away Okariyan.