"Monster Mash" is a 1962 novelty song and the best-known song by Bobby "Boris" Pickett. The song was released as a single on Gary S. Paxton's Garpax Records label in October 1962 along with a full-length LP called The Original Monster Mash, which contained several other monster-themed tunes. The "Monster Mash" single reached number one on the Hot 100 chart on October 20 of that year, just in time for Halloween. It has been a perennial holiday favorite ever since.

Pickett was an aspiring actor who sang with a band called The Cordials at night while going to auditions during the day. One night, while performing with his band, Pickett did a monologue in imitation of horror movie actor Boris Karloff while performing The Diamonds', "Little Darlin'". The audience loved it and fellow band member Lenny Capizzi encouraged Pickett to do more with the Karloff imitation.

Pickett and Capizzi composed "Monster Mash" and recorded it with Gary S. Paxton, Leon Russell, Johnny McCrae, Rickie Page, and Terry Berg, credited as "The Crypt-Kickers". The song was partially inspired by Paxton's earlier novelty hit "Alley Oop", as well as by the Mashed Potato dance craze of the era. A variation on the Mashed Potato was danced to "Monster Mash", in which the footwork was the same but monster gestures were made with the arms and hands. Mel Taylor, drummer for The Ventures claimed to play on this, and that fact is repeated many places, including Taylor's N.Y. Times obituary.

The song is narrated by a mad scientist whose monster, late one evening, rises from a slab to perform a new dance. The dance becomes "the hit of the land" when the scientist throws a party for other monsters. The producers came up with several low-budget but effective sound effects for the recording. For example, the sound of a coffin opening was imitated by a rusty nail being pulled out of a board. The sound of a cauldron bubbling was actually water being bubbled through a straw, and the chains rattling were simply chains being dropped on a tile floor. Pickett also impersonated horror film actor Bela Lugosi as Dracula with the lyric "Whatever happened to my Transylvania Twist?"

The song was re-released several times and appeared in the Billboard charts on three occasions after the original release — December 1962, August 1970 and May 1973. The BBC had banned the record from airplay in 1962 on the grounds that the song was "too morbid". It was eventually released in the United Kingdom in 1973, where it peaked at #3 in early October. It re-entered the British Charts again on November 2, 2008 at #60.

"Monsters' Holiday", a Christmas-themed follow up, was recorded by Pickett and released in December 1962, peaking at #30 on the Billboardchart. The tune was penned by the renowned novelty song composer Paul Harrison. In 1985, with American culture experiencing a growing awareness of rap music, Pickett released "Monster Rap", which describes the mad scientist's frustration at being unable to teach the dancing monster from "Monster Mash" how to talk. The problem is solved when he teaches the monster to rap. A movie musical based on the song starring Pickett was released in 1995.

"Monster Mash" became a pop music standard, and many cover versions have been recorded over the years. The Beach Boys covered the song just two years after its original release, on their 1964 album Beach Boys Concert. That same year the Bonzo Dog Doo Dah Band covered it on Tadpolesand in 1968 performed it on the British television series Do Not Adjust Your Set. Boris Karloff was so taken with the song that he performed it himself on a 1965 episode of Shindig!. In 1972 horror film actor and DJ Mike Raven performed a version of "Monster Mash" on the music show 2 G's and the Pop People. Actor Vincent Price recorded a version of it as well in 1977. A 1978 Halloween episode of Happy Daysfeatured Ron Howard performing a rendition of the song, using a Peter Lorre impression rather than Pickett's Karloff one. In 1980 the British ska band Bad Manners covered "Monster Mash" on their debut album Ska 'n' B. Hardcore punk band Ill Repute covered it as well on their 1985 album Omelette. In 1988, The Big O covered it for the Return of the Living Dead Part II Soundtrack.

The 1996 album Test for Echo by the Canadian rock trio Rush includes an instrumental track, Limbo, which contains several samples from "Monster Mash" including the line "Whatever happened to my Transylvania Twist?".

In 1997, the horror punk group The Misfits released a music video of them covering "Monster Mash" live. They also released a studio version as a single in 1999, and recorded a separate version for their 2003 album Project 1950(see below). A Kidz Bop cover version appeared on Kidz Bop Halloween(2004). Mannheim Steamroller also covered the song for their 2006 album Halloween, Vol. 2: Creatures Collection. The song has also been covered by Zombina and the Skeletones.

In 2008, The Smashing Pumpkins released a live recording of the song from Halloween of that year through Live Smashing Pumpkins.

Horror punk band the Misfits recorded a cover version of "Monster Mash" in 1997 as part of a promotion surrounding a DVD release of the 1969 stop motion film Mad Monster Party. Their version was released as a single in 1999, and a new version was recorded for their 2003 album Project 1950.

The Misfits recorded their version of "Monster Mash" in 1997 in a recording studio in Newark, New Jersey. Bassist Jerry Only later stated that "The 'Monster Mash' was a no-brainer for the Misfits to cover as a timeless Halloween release. The song was always a childhood favorite of mine." The recording was the first time that Only had performed lead vocals for the band, while then-Misfits lead singer Michale Graves provided backing vocals. On October 18, 1997 a live performance of the song was recorded and broadcast from the studio of the New Jersey-based cable television music show "Power Play", the same studio in which the song was recorded.

The Misfits' version of "Monster Mash" was used in a cross-promotion campaign arranged by Deluxo and John Cafiero, who had directed the Misfits' music videos for "American Psycho" and "Dig Up Her Bones", to create awareness of a home video release of the 1969 Rankin/Bass stop motion film Mad Monster Party. Deluxo had recently acquired the rights to the film in hopes of restoring it, but could not find a quality print. They eventually found a quality 16 mm print and the Misfits hosted a special screening of the film at Anthology Film Archives in New York City, with the "American Psycho" music video as an opening featurette. Notable attendees at the screening included members of the Misfits, Cafiero, Marky Ramone, Jimmy Gestapo of Murphy's Law, and executives from both Geffen Records and Roadrunner Records. Deluxo restored Mad Monster Partyfrom the 16 mm print and re-released it on VHS in limited numbers. A music video for the Misfits' live recording of "Monster Mash" was created interspersing clips from the film with footage from their "Power Play" performance, and was intended to be included as a bonus feature on a forthcoming DVD release. However, due to complications over distribution rights, the DVD was not released and the VHS version was discontinued. A DVD version of the film was eventually released in 2003 by Anchor Bay Entertainment, restored from a different 35 mm print.

As part of the promotional campaign, an image of Boris Karloff as he appears in Mad Monster Partywas used under license from his daughter Sarah Karloff in artwork for a 7" vinyl single of the Misfits' version of "Monster Mash". Percepto Records used the same image of Karloff for the cover of the film's soundtrack album which was released in September 1998. The Misfits single was intended to be released the following month, but was delayed due to lack of time to properly mix the studio recording. Instead the artwork was used in connection with a free MP3 download of the band's live recording of "Monster Mash", available through their website as a "virtual single". The image was used again as cover artwork when the finished single was released physically in October 1999 as the first release of the band's new label Misfits Records.

The Misfits' studio recording of "Monster Mash" was included on their 2001 compilation album Cuts from the Crypt. At the insistence of the band's label Roadrunner Records, the live recording was omitted from the album and only the studio version was used. The Misfits recorded a new version of the song, featuring Cafiero on backing vocals, for their 2003 album Project 1950. By this time the band had a new lineup consisting of Jerry Only (bass guitar and lead vocals), Dez Cadena (guitar and backing vocals), and Marky Ramone (drums). Only called this version of the song "probably the best version we've ever done. I'm really happy with it. We've recorded it several times in the past and this is the hardest hitting version of them all." Ramone commented: "'Monster Mash' always reminded me of Boris Karloff. Our version's a lot faster than the original, which was a slower 4/4 beat. I always liked the way the drums seemed to come in out of nowhere after Igor walked across the room." Cadena, meanwhile, remarked that "If I didn't know any better ['Monster Mash'] could have been written for the Misfits."

Two separate pressings of the Misfits single were released, both issued on 7" vinyl in 1999. The first pressing had the studio version on both sides and consisted of 1,000 copies: 800 on green vinyl, 100 on red, and 100 on gold. It was sold by the band while on tour and also by mail order through their "Fiend Club" fan club and official website. 1,000 promotional CD copies of the studio version were also pressed and used for limited solicitation to radio stations. A second pressing of the vinyl single had the studio version on side A and the live version on side B and consisted of 1,000 copies on glow-in-the-dark vinyl, available exclusively by mail order through the band's website. The single sold out and is no longer in print.

All songs written and composed by Bobby Pickett, Leonard L. Capizzi.