You tube has a rather good video posted of Fanny's appearancew on Beat Club back in the 70's. For those who don't recall, tnhey were the first all girl band that got signed to a major label and recorded albums. Their recordings weren't "great", but they were good. Even they said and still say that they didn't approach what the band was about live. There are a couple of more recent interviews on You Tube as well. I think they are a perfect example a band that got caught in the machine and didn't come out as well as they should have, They had great four-part vocals, a really good keyboard player and bassist, a pretty good drummer and an good guitarist, which is to say she played really good rhythm guitar, and adequate lead.
I think this performance is much better than most of what I heard on their records. But they were a much better band than they were ever allowed to be. Check 'em out.