Music scene is very good in York ,
some good jazz around ..... however venues are really crap!!!
Also renting or buying in a ok area is a bit expensive compare to Leeds where you could afford the same property for couple of hundreds less !
Leeds music scene is great , some cool venues and loads of talented musicians , also reharsale space are so so so much better than york and cheaper of course . I ve lived in york for 12 years and anytime I needed a musician or reharsing I had to go to Leeds, you are also closer to Manchester .
if I was really focus on doing music I would def choose Leeds over york , if you are a part time musician and looking to play couple a gigs a month with no commitment then york is the better choice . Do you have family ?
Some great schools too!