Do Re Mi Fa Rondo

is a song covered by Hello, Happy World!

It was originally produced by 40mp, sung by Hatsune Miku and released on January 17, 2012.

It is the first Medley Song for the event With Hello, Happy World! and Friends!

A full version of the song was played during the Bandori x Vocaloid livestream held on August 1, 2020. It is also included in the album Garupa Vocaloid Cover Collection, which was released on December 16, 2020.

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