Nearly UNKNOWN Gaster's Theme secret in Undertale (snd_mysterygo)

"Interesting. VERY interesting." This video details one of the (in my opinion) most unknown yet most cool secret in Undertale: the hidden melody in "snd_mysterygo", which plays when interacting with the Mystery Man inside of Waterfall&secret room (and one of Gaster&followers in Hotland). Please ignore the minor errors, like how "who" should be "whom", for some reason I always notice them as soon I&uploaded and not before! The Mystery-Man footage originated here: In a few days, I will be uploading a big video, which ranks every Undertale song according to a poll I held earlier this month (which received over 1500 responses!). It&pretty interesting, so stick around if you&interested!