Tori no Uta

is a song covered by Roselia.

The full version of the song was included in the limited photobook edition of Roselia's mini-album ROZEN HORIZON, which was released on May 18, 2022.

It was originally sung by Lia and used as the opening theme for the visual novel. It was also used as the opening theme for its anime adaptation.

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Trivia

 * Not counting the full versions, Tori no Uta is the longest song in the game. It was previously held by Tamashii no Refrain, another Roselia cover song.