Fascinating. I think it's particularly tricky because I'd argue it's not 13/16, but rather 6.5/8, in terms of where we intuively feel the beats. (Like the traditional difference between 4/4 and 2/2.)
But fractional top numbers in the time signature basically don't exist -- this is the first time I've come across something that feels like that -- hence why it's so hard to pin down.
But fractional top numbers in the time signature basically don't exist -- this is the first time I've come across something that feels like that -- hence why it's so hard to pin down.