Uploaded April 2013 | Updated September 2026, 2 weeks ago

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Without a doubt, the best fanmade composition I've heard. It also fits surprisingly well with the actual final boss, probably even more so than the real theme.
This song was made by Bradley Kroehling. I had no part in making the song, only extending it. Also, Luigi's Mansion Dark Moon is owned by Nintendo. I do not own anything in this video.
Bradley's channel: youtube.com/user/rulerofyourface?feature=watch