Uta no Saku Shima - Tsubomi Ban -

 (歌の咲く島 -蕾盤-) is caeca's demo single. It was released on May 5, 2019. It was available exclusively at some Tower Records stores.

Tracklist

 * 1) Uta no Saku Shima - Acoustic Ver. (歌の咲く島（アコースティック・バージョン）)
 * 2) Uta no Saku Shima - A cappella Ver. (歌の咲く島（アカペラ・バージョン）)

Single Information

 * Lyrics & Composition: Takahashi Hyouri