Https- www.youtube.com watch?v=HfEcuKU822o

" https://www.youtube.com/watch?v=HfEcuKU822o " is a track seemingly-exclusive to SiIvaGunner's Highest Quality Rips: Volume C.

Joke
This is an arrangement of "mus_f_part3" from ' using instruments from '. This is in reference to "Ultimate Koopa - Super 👉█̸͌̑█̷̾̓😁̶̆͠☼̷̇̃👈̸̂͑█̷̾̓█̾̓ 64", which is an arrangement of "Your Best Nightmare" using instruments from Mario platformers. As "mus_f_part3" is unused in Undertale, this is also likely referencing how Super Mario Galaxy 2 wasn't included in ''.

Trivia

 * The track's name is the URL for "Super Mario 3D All-Stars in a Nutshell" by Mayo.