Country Joe McDonald is best known for his performance at Woodstock and leading the chant of a certain four-letter word. I saw him play a free performance at a small coffee shop in Michigan called the Shaman Drum a couple years ago. There were fewer than 10 in attendance. It was sad that more people didn't know about this show, but still amazing to see Country Joe in such an intimate setting.
A little known fact about Country Joe is that he used to be the boyfriend of Janis Joplin. At this performance, he played his tribute to Janis. I find the song entitled "Janis" to be very moving. You can find lots of information and more songs on Country Joe's website http://www.countryjoe.com/. Enjoy.