Anyone who reads a synopsis of what JTA is would probably think it's bombastic and filled with action all the time.
To me however what better describes JTA are those quiet moments, the moments in which characters sit back, talk about their feelings, their fears, their pain, their joy, their hope and their love... And to me that can only be done with jazz.
It can be happy, it can be sad, it can be both at the same time, it can make you feel dragged and heavy, or light as a feather, it can fill you with energy or slowly calm you.