Very small jazz bar in Kyoto

One night we walked by this place and heard people jamming inside. We got in for a drink. The owner (60 to 70 years old) was himself a musician. We somehow started talking about traditional Japanese music and he invited us upstairs to see his wife and his friends play traditional instruments. He gave us a business card but we lost it. We're trying to find the name of the place so we can get in touch with him.

You might possibly have a slightly better chance of a response if you give more details about WHERE in Kyoto this was.

And when, and what floor you mean by "upstairs", and photos if you have any. Especially, if you can post photos of scenery that you took just before/after your visit to the bar, that would help pinpoint the area. There are just too many 70-year-olds who love to jam.