Listen to Original Music here: https://soundcloud.com/terraria-ghost/m-shroom-hotting-up-ft-jimmery-caine
And yes, I did got permission from him.
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.