The Hewardine/Smith collaboration. So much better than the sum of the 2 parts. Boo (Hoo) has turned into a serious face who would be ideal for the musical interlude in the 2 Ronnies and Darden keeps slipping off the map, despite some really very good product. Playing to 4 people and a dog at the late lamented Ceol Castle in Brum doesn't help many careers I guess.
(Everybody at the Ceol had to compete with a howling dog in the alley outside, often providing great mirth to the world famous people on stage and the miniscule audiences. Gene Parsons, Al Perkins, both Byrds/Burrito alumni were 2 of, in my mind, the giants of "country-rock" who have played to audiences of about 10 there.)

..and yes it sounds better on vinyl.
Not everything thing does, but my general rule is, whatever format the music was recorded for, that's where it sounds best.

...how you heard it first, what with memories of the first time, summer of 42 etc etc. I believe that if formative moments were with a cassette of Atom Heart Mother, or under the sheets in the dormitory with John Peel playing the Albion Dance Band (don't ask, but likely to be a solitary pleasure, as John Peel had long since left school), then that will be the fondest recall of the music.