time signature

[justinjalandoni]

Dudes why the hell do composers still put time signatures like 4/8 or 2/2 when they can just simply change the note values themselves?

[birba]

you're going to have to explain yourself a bit fuller on that one before anyone can answer.

[justinjalandoni]

For example in the last moevement of Mozart's Piano Concerto 9, couldnt he just have used 16th noes instead of 8th notes in all breve?