"Nyeh Heh Heh! (OST Version) - Undertale" is a high quality rip of the OST version of of "Nyeh Heh Heh!" from Undertale.
After about four seconds in, the rip turns into a mashup of the advertised track and the song "Put A Donk On It" by the Blackout Crew.
This rip is a remaster version of a pervious rip that was originally uploaded to the GiIvaSunner channel under the title "Nyeh Heh Heh! - Undertale" on March 1, 2016. The SiIvaGunner upload of it also originally used this name. It was presumably renamed upon the release of the rip of the same name.
- A portion of this rip is used in "Fly Me To The Moon (∞ Climax Mix) - Bayonetta".