You don't know what you like, you like what you know. In order to know what you like, you have to know everything.
You hear it in your brain. Whatever makes sense. Some songs work well as quartet songs, sometimes they don't.
I'm not going to play funk licks on a jazz album. That makes no sense.
A lot of musicians have a tough time hearing what we're doing in a trio format.
So much of Jazz doesn't have an audience other than music students or musicians.
If youre going to use standards as criteria for signing musicians, you can sign thousands. If youre going to use some sort of conceptual interpretation thats based on the tradition of those standards, but is trying to move away from it, youre down to about 10 people or so.