I've never met Si Kahn or seen him perform, but I've had pleasant correspondence with him on a number of occasions. I came across a full concert on YouTube. I guess that will have to satisfy me for now, but it sure would be nice to see him in person.
Si, if you want to come to Northern California, I know some nice house concert venues.

Here's the concert video.

https://www.youtube.com/watch?v=UyLieUn3YXQ