Shot in two weeks for $50,000 outside Stamford, Connecticut by local producer/director Del Tenney, The Horror of Party Beach was advertised as “The First Horror-Monster Musical.” Tenney would also direct I Eat Your Skin, a movie that we all know as the much worse half of the famous double bill with the utterly astounding I Drink Your Blood.

The Del-Aires just want to play a party on the beach for the kids, but radioactive waste transforms a skeleton into a shambling monster. Hank Green just wants to get with Tina, but she’s drunk and wants to hook up with a biker. A fight ensues, but dudes are dudes and get along and end up shaking hands. So The Del-Aires play “The Zombie Stomp” and everyone has a swell time until that monster — remember him? — kills Tina and her bloody body washes up at the party.

Meanwhile, Dr. Gavin and the cops are on the case, but the doctor is more on Hank’s case, but he just knows that his assistant is the object of his older daughter’s affection. And then there’s some voodoo, because you know, why not. And then there’s a slumber party, because that’s what girls do when they’re in their early twenties. But never mind, the monster has found friends and they decide to wipe out all of these nubile young somnambulists.

Through some buffoonery, we learn that sodium can kill these monsters. There are also many, many more songs by The Del-Aires, who can’t seem to grasp the fact that monsters are rising up and mostly killing attractive women. Perhaps they could put their guitars down, pick up some table salt and get to work wiping out whatever the hell these creatures are?

This movie even got a photo comic book tie-in from Warren Publishing, the home of Famous Monsters, Eerie and Creepy. Wally Wood and Russ Jones worked on it and it’s a great collectors’ item.

Beyond all those groovy tunes by The Del-Aires, Edward Earle Marsh composed the soundtrack. You may know him better as Zebedy Colt, who started his career in Laurel and Hardy’s Babes In Toyland before releasing a series of gay cabaret songs before embarking on a career in pornography which would lead him to being in movies like Barbara Broadcast and directing films like The Devil Inside Her, which has nothing to do with the Joan Collins film of the same name.

You can watch this for free on Tubi or buy the Severin blu ray to get the best possible experience.

UPDATE: Thanks to Robert Constant, I am happy to tell you that this is also on Amazon Prime, free with your membership.