Hello I am learning musical theory, I have a question about compound time signatures :
I read that for a compound time signature, like 6/8,
"the upper number is the number of divisions thus you have to divide it by three to get the number of beats".
This is true if for example each beat is made of 3 divisions, what if each beats is say made of 5 divisions, like a dotted full do + full re beamed together ? In this case you have to divide it by 5, and if each beat is of variable number of divisions, the upper number can't get you immediately the number of beats.