The Moon Waltz (2004)

In a dark alley with only one street lamp, a red-eyed young girl is admiring a music box. When the music starts, the imaginary (or not?) adventure of our protagonist begins, who will tour dark caves and starry skies, first running and later flying, to finally reach the Palace of the Moon (named Chandra Mahal in the song), where time flows in a different way...First "professional" animation work by Atsuko Ishizuka of MADHOUSE.

Unfortunately the movie The Moon Waltz is not yet available on HBO Max.