Second vote for Genesis, the real Peter Gabriel Genesis that is, not the abomination that was lead after his parting by Phil Collins into some strange non world of Motown pop drivel.
Albums
Trespass
Nursery Crime
Foxtrot...................This has the awesome 'suppers ready' track
Selling England by the Pound
The Lamb Lies Down on Broadway
at a pinch
Seconds out ........a live album
A Trick of the tail..............the first post PG album
Wind and Wuthering............the second post PG album
I would not slide any further down the slope than this.
Also consider for prog electronica chilout music with no lyrics
Tangerine Dream, either Phaedra or Rubicon
Tomita, Snowflakes are dancing.....a rework of Debussey.
and a second vote for Steve Hackett, and his superb Spectral Mornings and Please Don't Touch.
And the original concept prop album from the 60's British R&B outfit , The Small Faces, Ogdens Nut Gone Flake.
Anything by Kevin Ayers, kind of cafe prog ( he used to drink wine with Syd Barret)
One of my all time Prog/Folk rock albums
Wishbone Ash, Argus
and lets us not forget the melodic Moody Blues.
Days of Future Past
To Our Chidrens Childrens Children
Every Good Boy Derserves Favour
also around at the time
The superb Black Sabbath
and some people were into Barclay James Harvest and Greenslade, although I never got into them.
If you get the chance to look up the solo works of some of the band members, may I recommend
Jon Anderson, Olias of Sunhillow
Chris Squire, Fish out of Water
Rick Wakeman, the 6 wives of henry VIII, and Journey to the Cetre of the Earth, also consider to whimsical but superb, Myths and Legends of the Court of King Arthur and the Knights of the Round Table.
For fans looking for that late 60's early 70's psychadelic prog sound as opitomised by the early Syd Barret Pink Floyd albums such as Saucerfull of Secrets and The Piper at The Gates of Dawn, look no further than the elephant six network of bands from the USA in the 1990s. In particuler bands such as The Olivia Tremor Control and their superb album, 'Dusk at Cubist Castle' and the terrifc Neutral Milk Hotel, my fav being 'The Airoplane Over The Sea'
If I think of any more I will be back
(I was in highschool in 1973)
My favorite album is Lateralus
