Ash-Covered Haitarou / The Tengu`s Sake / Kanekichi the Flute Player

A noble boy is covered in ashes to hide his true identity. A Tengu turns a lake into sake, and threatens a boy if he reveals the secret. A man named Kanekichi plays a flute so beautifully it entrances even the animals. Source: crunchyroll

The show’s own verdict is on its page.