Every Swing is a small friendly club in the barren back streets east of Ueno Station. This is not an area full of music so it's all the more welcome to have someplace representing the jazz army.
There is no set genre at Every Swing so expect to hear anything from West Indian steel drums to chanson here. Every Tuesday is the "Service" Jam Session night, open to all levels from beginner upwards. At only ￥1000 it's a good deal as many jam sessions in Tokyo charge a lot more to join. The crowd here is usually a bit younger than many other jazz clubs, which is kind of nice. The usual drinks and light snacks are available, and check out some nice photos at their website here
Exit: 2 (Tokyo Metro Subway Exit, NOT JR)
Distance from station: 6-9