Roselia Instrumental Collection 1

 is a collection of 30 instrumentals for original Roselia songs.

It was released digitally on January 15, 2022.

Trivia

 * The instrumental versions of "Neo-Aspect", "Legendary", "Avant-garde HISTORY", "Break your desire", "Song I am.", "Proud of oneself", "overtuRe", "Sing Alive", and "Singing "OURS" were previously unreleased.