Valkyries from "A Fright at the Opera"

 Those are the Valkyries from The real Ghostbusters Episode called "A Fright at the Opera". 

Look! All the Valkyries were attacking the Opera and they were screaming 

and their Horses and Neighing. 

Ray told Winston all Valkyries could be dangerous and they 

were one of the most powerful Spirits in Norse Mythology. 

And also, all the Valkyries could be awaken by Praise  

and they wouldn't be satisfied until they could 
find someone off to Valhalla. 

But "Ride of the Valkyries" was a Music about Valkyries
from the 4-Cycle Opera called "The Ring of Nibelungen" by Richard Wagner. . 
According to Norse Mythology, 
All the Valkyries chose those who may die in battle in those who may live and they would bring 
the dead Warriors to Valhalla the Afterlife Hall of the Slain. 

The Valkyrie was a supernatural muscular Woman with a Shield and a Sword who rode on a Horse.