River of Tears（涙の河）-Hitsujibungaku（羊文学）

This song was released by Hitsujibungaku on October 12, 2026.

The sheet music was created by "Y"—a music creator born in 2010 who enrolled in a music high school in April 2026 and aspires to become a composer and arranger.

Y possesses absolute pitch, the ability to distinguish individual notes when multiple sounds are played simultaneously.

While Y has previously performed five other songs by Hitsujibungaku, this marks their first time creating an arrangement.

The sheet music was produced using the notation software "MuseScore," and the YouTube video was created using a piano roll tool.

You can watch a video of Y performing this arrangement on the piano here:

https://youtu.be/3ljwtU_mLIc

*Please note that the sheet music was developed after the performance, incorporating ideas on how to make the arrangement even more refined; therefore, the melody played in the video may differ from the content of the sheet music.