Gem.
Touhou 6 remix Ending Theme
An Eternity that is More Transient than Scarlet remix
https://www.youtube.com/watch?v=OQ5f49lDH7E
This was supposed to be included in one of the Touhou remix albums, but it didn't get included.
Gem.
You may only use this piece for commercial purposes if your work is a web-based game or animation, otherwise you must make specific arrangements with the artist.
* Remix of a third-party piece.
Excercise caution when using it, refer to author comments / contact the author for details.