Overall, the best sound setup for jazz in the city.
The food leaves something (dinner somewhere else) to be desired, the drinks are tiny and the covers are high.
But - I've seen consistently good music here. Either the owner is an avid jazz fan or just knows what talent is and books it.
Other jazz clubs in Montreal keep a tight leash on their rotation so you end up seeing the same acts again and again. Upstairs Jazz keeps a good mix of Canadian and international musicians in an unpredictible line-up. This fact alone keeps me coming back to find my seat at the bar for at least two sets, sometimes all three.