"This Is Halloween" is a song from the 1993 film The Nightmare Before Christmas composed and written by Danny Elfman.
The song corresponds to the appearance of all the monsters in Halloween Town in the animation, welcoming the arrival of Jack the Pumpkin. The entire song is sung by different characters such as the monster under the bed, the werewolf, the mayor, and the ghost. It is also a must-play background music at Halloween parties and amusement parks every year.
If you're designing some spooky toys or small gifts, then you can choose this song.