I also saw Joni Mitchel before her descent in to drugs and hag hood, singing on a milk box before a music store in Harvard Sq.
After I got out of the army, I put folk music to the side and became a Zappa fan, if there is someone in the area I still go and listen, it is different.
Who did ypu see in '62?
To me, Zappa's masterpiece is still 'Freak Out' from wayyyyyyback with the classic single, 'Help, I'm a Rock.'