Muses

Imagine you are an author or song writer and you have a writer's block, so completely no inspiration for your next book or song. Wouldn't it be good having someone who inspires you again, who lets you create the best work that you've ever done?

Well, that's more or less what our creature today does – or at least in those years was said to do - because you might not know it as a creature (or creatures to be more precise) but as a human person, mostly a woman. But do you know whether it has an origin in ancient Greece?
It was said that there are nine sisters, sometimes also just three or four or seven are mentioned. They all were personifications of different kinds of arts, one was for example for the history, one for dances and one for astronomy.
The very famous author William Shakespeare mentioned them in singular or plural in his works as well as many other authors. The word "museum" is said to be related to the name of our creatures. But from which language does the word derive? Is it Greek or maybe another ancient culture? Or maybe our creatures are just an invention of Hollywood for a fantastical movie?