The unlikely 1972 chart feat that proves the decade belonged to prog-rock
I can't produce a reliable summary here — the article text you pasted only contains site navigation/header elements ("MusicFilmTravelArtNews Shop Mailing List", "Cover Story | Yard Act") and not the actual body text about the 1972 chart story. I also don't have web access permitted in this session to fetch the page myself.
Could you paste the full article body text? Once I have the actual content, I'll summarise it in the requested format.