The Logic Off Topic list

firstly it is NOT an agreed classical practice - it has been advocated, 
but always disputed. (along with the representation of stuff like truly 
irrational note-lengths).

> It is maths.
> Why is the bottom number called 2? because the breve is divided by 2
> Why is the bottom number called 4? because the breve is divided by 4
> Why is the bottom number called 8? because the breve is divided by 8
> Why is the bottom number called 16? because the breve is divided by 16
>

the relationship between the numbers does not mean that those 
relationships hold in music.
if you look at something like pitch-class set theory you find that you 
have to clearly define which mathematical representations are also 
valid musical ones.
the numbers at the top are numbers.
the ones at the bottom are the *names* of particular note pictures - 
this is far more important than any relationship between say 
consecutive time sigs.

> This is very basic stuff. Take a few music lessons!

steady on girl.....

steve parker