You may never had heard of Hot Tuna but I'll bet you've heard of the other
band that their founders were involved with -- Jefferson Airplane.
Jorma Kaukonem (guitar) was one of the co-founders of Jefferson Airplane and
Jack Casady played bass in the group. Jorma had a strong blues background
and he and Jack left the Airplane in the early 70's to concentrate on the
blues and formed Hot Tuna. The group is still around and going strong. RCA
reissued some of their original albums on cd a few years ago.