"A Curse Within (Credits) - Skeleton Boomerang" is a high quality rip of "A Curse Within (Credits)" from Skeleton Boomerang. It is a "clue rip" for The SilvaGunner Spooktacular Halloween Horror Special: Part III, pointing to Mr. Bones as a suspect.
Joke
Starting at 0:26, the song is mashed up with "America, Fuck Yeah (Bummer Remix)" from the 2004 movie Team America: World Police
At 0:54, the rip starts cutting out with VHS distortion, as images appear: the cover to Mr. Bones for Sega Saturn, followed by 8-Bit Beast, which flips upside-down and widens. These images are accompanied by the "SKULL TRUMPET" honk. At 0:57, the rip starts cutting out with VHS distortion again, initially showing the thumbnail for the rip in greyscale. A 3d model of a skeleton is then shown from behind, which slowly turns to face the viewer while intercut with various other bits of skeleton-related found footage. The skeleton is revealed to have eyeballs, which turn to face the viewer as its mouth opens up. At 1:24, the skeleton rushes to swallow the camera as the rip rapidly fades to black, with nothing but ambience for the remaining 6 seconds.