John: No, Al Stewart has not played for our series. I never really followed his career, but I do like a number of songs that I've heard - "Time Passages" and "Year Of The Cat" being two of them. I hope you can talk Susan into going. I'd love to see him, myself. For some reason I was thinking that Sheryl was going to see John, not Al, at McCabe's last summer, but I could be wrong and await clarification from her.
As for the 2005 Massey Jam Session, I still have not come across those tapes in the many boxes I'm trying to go through and unpack. As you may remember, I wasn't able to stick around for the entire jam session since I had to go pick up a special birthday cake
and other party supplies. When I left, I just turned on the recorder with a fresh tape and got whatever was played in the 80 minutes that followed. I have no clue if Ron arrived before the tape ran out or not. I have a lot going on right now with concerts and job hunting, but will continue my search for the tapes and my hope is to have an answer for you soon. (I'll make a copy for you either way)
David: the sad thing is that I not only didn't know the name Pentangle, but I didn't know the guitarists names either. I just thought it was ironic that I read about them here and within a few hours my partner sent me an email letting me know that he had just booked Renbourn. If I hadn't read about him here, I would have had no idea who he was when I received that email. Thanks to you guys, I was able to tell Carey, "Sure I know who he is! He founded Pentangle and is a highly regarded guitarist." :D