https://www.musical-u.com/learn/how-to-hear-and-create-time-signatures/
What is the role and importance of time signatures in music?
The time signature is one of the most important regulations of a piece of music. It basically describes how the pulse of music works. It regulates the tempo at which the music is played.
In music, time signatures are usually notated as two numbers, one on top of the other and are written to the left of the clef and key signature.
If you’ve ever wondered how time signatures work, how to figure them out, and how to choose your own when writing songs, this article is going to help you.