Trying to preserve an old page that I had a hard time finding online.
Apparently, a long time ago, in 2008, a person named “pingosimon” composed a silly cover of the level 6 theme from “Castlevania” for the NES, calling it “Cv Lvl 6”. In response, a bunch of other folks made their own versions.
Covers (links to bossies.org, unless mentioned otherwise):
Riders' rap coverI was unable to find a copy.