John Hall was a pretty good guitar player back in the '70's. He formed a group called Orleans and they had a couple of hits. One was Dance With Me in 1975. The other was Still the One, which you probably hear if you ever listen to the oldies station in your area.
He wrote many of these songs with his wife, Johanna. He left Orleans in 1977 and eventually worked with Jackson Browne, Graham Nash and Bonnie Raitt to organize the No Nukes concerts at Madison Square Garden in 1979.
Hasn't been seen or heard from since.