Glad you could drop by for another set of sinfully underplayed tunes from yesteryear. I wouldn't exactly say the Edgar Broughton Band was ever a household hame, but I must say they deserve more attention than they get. They've got that prog/acid rock 70s vibe down pat. I don't know much about them, but I've enjoyed their album immensely. The song I've selected for you is "Madhatter" from their eponymous 1971 LP.
Here's another one from 1971 called "Tuely's Day" by the progressive rock group The Road. In 1971, bubblegum music was experiencing a dry spell, and it was hurting labels like Kama Sutra and Buddha which had specialized in the brand. Prog rock is the direct descendant of psychedelic rock; the drug element, creativity, experimentation, and disregard for the mainstream were still there; however, it had morphed into a more pretentious and heavy-handed beast, often unlistenable to the average shmoe.
This is not to say all prog music was below the radar. Some groups like Pink Floyd and Yes became Billboard successess. The Kama Sutra label was hoping for a success with The Road.... unfortunately, The Road kinda sucked.
Maybe I'm being a little harsh, but The Road is the textbook example of why prog rock fell out of favor. It's so philosophical, so experimental and "intelligent".... where's the fun? No wonder people were itching for KC & the Sunshine band. By the mid 70s, prog rock had largely morphed into the AOR format and Kama Sutra and Buddha went on to score big with the Super Fly soundtrack and Gladys Knight LP's.
What became of The Road? No idea. But forty years later they're featured on a blog called Retrospace. Thats gotta count for something.
Lastly, we have ex-Tangerine Dream member, Klaus Schulze. His 1973 album, Cyborg, is surely a pioneering work in avant-garde music. It's alien sounds grow on you after a while, so I won't say Klaus is the predecesor of Yanni and Tesh, whom I hate. In fact, the strange ambient sounds remind me a bit of David Bowie's album Low. The song I've included for is called "Neuronengesang", which I assume means something like "brain song". Take a listen.