JEFFERSON AIRPLANE had both GRACE SLICK and MARTY BALIN:
Didn't Jorma sing as well?
Hmmm, I used to know
AIRPLANE details better way back when than I do now... I still love them and have several of their albums, but I have to say, don't know,
REV. Maybe he sang for
HOT TUNA?
He definitely sang for Hot Tuna... I only have Surrealistic Pillow, and I always assumed it was him on "Coming Back to Me", but it's probably Balin. I'm less of an expert on them than you.
I think
MARTY BALIN wrote that one..., and assume it's him singing for that reason and it sounds like him, but I often think
MARTY and
GRACE are interchangeable...
I think
THE TEMPTATIONS not only had many lineup changes, but multiple lead singers over the years, and at times, I think, all together:
DAVID RUFFIN,
EDDIE KENDRICKS,
OTIS WILLIAMS...