Which song became the peculiar Halloween anthem?

"Monster Mash" is a 1962 novelty song by Bobby "Boris" Pickett. The song was released as a single on Gary S. Paxton's Garpax Records label in August 1962 along with a full-length LP called The Original Monster Mash, which contained several other monster-themed tunes. The "Monster Mash" single was #1 on the Billboard Hot 100 chart on October 20–27 of that year, just before Halloween. It has been a perennial holiday favorite ever since. The song is narrated by a mad scientist whose monster, late one evening, rises from his slab to perform a new dance, with a name implying it is inspired by the Mashed Potato, a popular dance of the early 1960s.