My next (final) SF album is the self-titled debut by Hot Tuna.
Hot Tuna were a Jefferson Airplane spinoff started by bassist Jack Casady and guitarist Jorma Kaukonen, initially playing acoustic country blues that sounded nothing like the Airplane. This debut album was recorded live in Berkeley while the Airplane were on hiatus, and showed a different musical side of Jack and Jorma. Here's the opening track, "Hesitation Blues".
I'm a lot more affable to "jamming" when it's on acoustic instruments, and Hot Tuna is amazingly easy to listen to. Forty years and countless album later, the Jefferson Airplane are long gone, but Kaukanen and Casady are still playing acoustic and electric shows as Hot Tuna, and Jorma still sings like he did in 1970!