While this is official, it's NOT something coming to atleast V2, of the mod, and was just done for fun, as a April Fools day prank.

Mario's Madness - Unamed Luigi Doll Song

Mario's Madness - Alone-Fi (Lofi Remix)

Song made by Hazy. Go support his content 

https://youtube.com/channel/UCSxqFJIyTNU0OtGMXLTiE6Q

Mario's Madness V2 - Drowned (Final Version/Possibly Scrapped)

MINUS WORLD - Triple Trouble (Super Mario Bros. Mix) NOT MADE BY ME MADE BY  the_dark_lord5 .m4a

TTsatanos

Composer(s): Adam McHummus
Lyrics:

0:07:
Educator: HI THERE. I'M SONIC THE HEDGEHOG. YOU'RE GOING TO PLAY IN MY SCHOOLHOUSE.

0:25:
Educator: I'M SONIC--


0:39:
Educator: CLICK ON ME FOR HELP!


1:07:
Educator: I'M SONIC THE HEDGEHOG!


1:20:
Educator: IF YOU EVER HAVE A PROBLEM, FIND ME--


2:06:
Educator: RIGHT OVER THERE IS WHERE YOU CAN PICK A CHARACTER! JUST CLICK THE ANIMAL! TRY IT, IF YOU DON'T BELIEVE ME!

Expulsion

God Complex Sonic Song (SONIC.EXE V1.5V2 SCRAPPED SONG)

black sun d side

FNF Parallax - One life (old)

By Maeow

I'll take this down if I'll have to 

(It's not fully implemented because lacks some plugins)

My Horizon V2 [Retake Mix; Old; Unfinished; Instrumental] | ILLEGAL INSTRUCTION: RETAKE

Deltarune Chapter 5 UST - REVELATION (Genocide Final Boss Theme)

FNF: Parallax was a mod owned/directed by RightBurst_Ultra and NayuChrome. Mod's main opponent presumably was Satanos, however it is not confirmed. Since Parallax is cancelled, some of it's content will be reused in Horizon's Edge and Rerun.

Expulsion

Friday Night Funkin: Parallax