Proto prog is where the Hammond organ comes to full bloom and has its day. Guitar is relegated to the backdoor, or not existant at all. Bands on labels like Neon were guitar-less or guitar-muted.
I just got a (duplicate) of Swegas "Child of Light". First track is a cover of Rare Bird, "Beautiful Scarlet"! (A cover of a band from the same immediate time period...and not that well-known either. Which means someone in the band had great admiration for Rare Bird.)
Of course after Graham Field and Ashton left Rare Bird, the sound changed dramatically and was guitar-prominent. More rock than prog.
Still, like Sammmmmy said above, the title track from "Epic Forest" is real good. Maybe reminds of....errr.....Nektar???
I have a Polish Muza press (with complete different cover art)of the second Rare Bird. Well, mostly . This is the tracklist:
down on the floor
as your mind flies by
what you want to know
bird on a wing