Watched a Grand Funk video on Youtube, never seen them play but listen to 'Caught in the Act' all the time. Great album and unfortunately the band never reached its full potential, but they where good.
Anyway at the 20:00 mark Freddie King come on and plays a set. Man this guy could play and he shows here his ability to solo, and it's a real treat. So I listen to an album by Freddie King on Youtube and he doesn't normally solo like he does on this video.
Freddie King is most likely a Blues legend and I was unaware that I had heard some of his songs played by musicians like Terry Edmunds.
Give a listen if interested
https://www.youtube.com/watch?v=KVEAqd7WVQM