Saw him at an outdoor concert in the early 80's. He opened for Judi Collins. My favorite song by him is 'Ol' 55.'
My ex turned me onto Joni. Saw her around 73-74. Tom Scott was the bandleader and Robben Ford was on guitar. What surprised me about her is what a great guitar player she was and still is. If any musician ever wondered why her songs are so hard to copy it's because of her intricate and often made up tunings.
I love reading interviews both old and new with Classic Rock musicians. I read one the other day from Joni that was done right after 'Court and Spark' came out. There's a treasure trove at this Rolling Stone link that goes all the way back to 1966.
http://www.rollingstone.com/coverwall/1968
Here's another one by her from the 'Court and Spark' album...
View: https://www.youtube.com/watch?v=iisYw0epV_Q