It’s not music, it’s the anime “Genki Shoujo Yukyougami”.

"Genki Shoujo no Kami" is a comic work created by Suzuki JULIETTA and serialized in "Flowers and Dreams" magazine.

The comic tells the story of the heroine Nanaisheng who ran away from home and met a mysterious man and started her journey to become the earth god. The heroine Nanaisheng ran away from home after her gambling father owed a huge debt. When she was living on the street, she helped a mysterious man who was chased under a tree by a dog. After learning about her experience, the mysterious man said: "Then I I'll give you my home!" So the homeless Nanai went to that "home" with doubts, and found that it was actually a long-abandoned shrine, and a fox monster appeared, claiming to serve the earth god. The fox demon Ba Wei, and the mysterious man turned out to be the land god. The mysterious man gave her his home, which meant that he also gave her the position of land god, so the heroine began her journey to become the land god.