Unused game soundtrack actually exists!

Did you know that on the game's Youtube channel, there is a song that was originally meant for a secret dungeon in Superstar Hero, but never got used? Here is the song: https://www.youtube.com/watch?v=Dr6C-0RJ2uU It was a cover of Rick Astley's song Never Gonna Give You Up in the same style as the mini-boss music. This unused track is not included in the game files nor the soundtrack.