system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Explain time signatures in music

I actually understand the "over" number. But in a waltz,

3/4

I don't understand how one derives the 4.
gpt
The bottom number indicates the type of notes filling each measure, and the top number represents the type of note the tempo is broken up into. So 3/4 would mean 3 quarter notes per measure, and the conductor would wave his baton 3 times per measure. And 6/8 would represent 6 eighth notes per measure. Also, there is common time, denoted as "C", which represents 4/4. Correct me if im wrong. Hope this helps.