Why do they call it a JAZZ festival?
All jazz festivals are the same. They originated as a jazz festival and then realized they could bring in more money if they included other genres. When the Montreal Jazz Festival started Miles was still alive and played the festival every year. You will notice this if you go because they can't seem to let go of him. His image is everywhere in Montreal.
How many people would show up in this day and age for jazz alone? It wouldn't even be worth it for the musicians. The beauty of a jazz festival is that it does attract the best of today's living jazz artists. One thing you won't see is pop or country. You will see blues and in the case of Montreal, loads of world artists. What ever the case, you're not ever going to see more jazz in one place. Never have, never will.
There is a pretty good iPad/smart phone app available that updates all year long with live shows in and around Montreal. It is available on the festival web site.
However, it has not been update yet with the info here.
I have seen some amazing jazz artist perform at the Festival. Herbie Hancock, Keith Jarrett, Jack de johnette, Dave Brubeck, Tord Gustavsen, to name a few.
Montreal is great city specially in the summer. Right now we are freezing are .... off.