Hi,
Gryphon, is a classically minded unit ... that happened to have created music for a Shakespeare Production by the National Theater in England. I think the play was "Twelve Night", by the way ... but will ahve to check on that.
The music for it came out in the album "Midnight Mushrumps" (not midnight musharses!" ... and it is an instrumental band.
There are a couple of other bands at the time, that kinda followed that Genesis/Yes mold some. I can think of "Druid", "Fruup", "Shelley", and a few others, but ... by that time, I was already much more into the European and International scene than I was into the English or American scenes that were getting boring and repetitive, and not even close to the others in experiments and creativity!
"Fruup" was an intersting band, but I think what hurt them is that they never got to a studio to have help to clean up their material, so in some of the albums, it sounds really disjointed, and badly mixed, almost like your very first garage tapes!
The main difference between FISH and the rest of these, including Peter Gabriel? ... FISH was an actor and is still acting ... PG still thinks of himself as some kind of famous this or that ... which always made me think that Marillion's 1st albums were much more honest about the lyrics and acting, than PG ever was ... with the exception of The Lamb Lies Down on Broadway.