Rainer Ptacek
http://www.youtube.com/watch?v=bDZCZuXTIQIRainer lived in Tucson, AZ and I saw him many times; besides solo gigs he also opened for and was friends with Greg Brown and Robert Plant and co-founded Giant Sandworms with Howe Gelb. A tribute album to Rainer,
The Inner Flame, included contributions by Plant, Jimmy Page, PJ Harvey, Emmylou Harris, Victoria Williams, Vic Chesnutt, PJ Harvey, The Drovers, Madeleine Peyroux, Kris McKay, Jonathan Richmanand, and others and was indicative of his reputation as a "musician's musician". He passed in 1997.