ELI5: Explain Like I'm 5

Micrologus

Micrologus is a big word that describes a really cool thing! Have you ever heard music? Well, micrologus is a book that talks about how music was made a long, long time ago.

But it's not just any book! Micrologus was written by a really smart man named Guido d'Arezzo. He lived way back in the olden days when people made music very differently than they do today!

Guido wanted to help people understand how music worked, so he wrote a book to explain it all. And that book was called Micrologus!

In Micrologus, Guido talks about things like the different notes used in music and how they fit together to make a nice sound. He also talks about how to read music and how to sing it!

So, micrologus teaches people how to make really pretty music, and it was written a really, really long time ago! Cool, huh?