Fofo (The Halloween Song) has been identified as “CAM & THE GRAM” by sagecells (2019). Solved by sagecells and Discord user fern_ok.
Pull up fo fo da fo fo, run around with the fo fo da fo fo fo

Did you know that this song is so good that the CIA ordered to remove traces of who made this song? Jokes aside, this is an awesome unidentified new wave song from a CFNY radio broadcast recorded by Susan from presumably July 1984. Susan's Facebook post was then reposted by DJFormaldehyde, granting its notoriety.

Nightwish is so good there's a misattributed song under their name that exists. Shadows is the third track from "Faster Harder Nightwish", an album misattributed to Nightwish after an April Fool's Day announcement in 2007. Soon after the announcement was made, a fake tracklist and audio was spread around forums and Russian P2P sites. Goliath109 found the song in a Sonic X AMV uploaded to VK in 2009.