Sorry Ozzy, I originally missed your real point. I responded because quite recently, actually the first time in years, maybe 30 or more, I heard this piece, owned the album at one time, long since gone and forgotten.
As far as long play it seems to me the Doors 6 minute version of "Light My Fire", the FM version that you mention Rcprince, is the earliest tune beyond the 2-3 minute standard of the era that was actually mixed in with the standard version on AM. Most of the others you mention were limited to WMMR, Philadelphia, the FM rock station at that time.
As far as long play it seems to me the Doors 6 minute version of "Light My Fire", the FM version that you mention Rcprince, is the earliest tune beyond the 2-3 minute standard of the era that was actually mixed in with the standard version on AM. Most of the others you mention were limited to WMMR, Philadelphia, the FM rock station at that time.