“BEST” is rather subjective. I like many already listed, and I’ll add a few I like that I didn’t see mentioned.
“Friends of Mr Cairo” - Jon Anderson & Vangelis
“24 hours at a time” (live) - Marshall Tucker band
Gotta agree with the “In-a-gadda-da-vita” nod, just a long-ass, cool grind.
I just discovered Bat Out Of Hell is only 9:52 (so close)
some great songs come in between 9:30 and 10:00
Spain - Chick Corea
Feels So Good - Chuck Mangione
You’ll find a lot of fabulous long songs in the Jazz world
Jethro Tull Thick as a brick is both good and long.
Is there no sense of history left any more? Is there no one left who…never mind. I nominate, without further comment:
“In a Gadda Da Vita,” by The Iron Butterfly at about 20 minutes.
It doesn’t meet the 1-minute criterion at about 8.5 minute, but I think “Light My Fire” should at least be mentioned.
Indications are that there is at least some sense of history left. See post #5.
Glad to hear I’m not the only person on Earth that likes that.
check out Dead Kenedy’s “Short Songs”, the intro is
Rick Wakeman, Eat your heart out
the only song I know that is shorter than my phones ringtone off the top of my head.
Iron Maiden, Rhyme of the Ancient Mariner
Janes Addiction, Three Days (live)
QueensRyche, Suite Sister Mary, where Geoff Tate sings the male and female parts
Tool, Third Eye
Neil Young, Cowgirl in the Sand (at 10 min 2 seconds)
MC 900 Foot Jesus, New Moon
Thanks for mentioning this. I have it playing right now. I’d forgotten how good it was. 
It’s not quite ten minutes (it clocks in at 9 minutes and 49 seconds), but “Velveteen” by Transvision Vamp is amazing.
And one that does qualify for this thread is “Don’t Let Me Be Misunderstood/Esmeralda Suite” by Santa Esmeralda. You can hear part of it in the movie “Kill Bill Vol. 1” when Lucy Liu and Uma Thurman are fighting, but the full length version is marvelous.
Xanadu by Rush
Nantucket Sleighride by Mountain on Mountain Live
**
Hamburger Concerto** by Focus
Critical1 mentions, “Neil Young, Cowgirl in the Sand (at 10 min 2 seconds)”
(kicking self) “Everyone Knows This is Nowhere” has long been one of my “Desert Island” albums.
Hear hear.
What, no Mountain Jam? :dubious:
Sonic Youth’s album-ending “The Diamond Sea” (from Washing Machine) - it begins as four minutes of the most tender, beautiful ballad that the band has ever written and stretches out into 20 minutes of the prettiest feedback jam ever put to tape.
[tiny hijack]
AH HA! You have cleared something up for me. This always came on last.fm radio’s progressive metal station, and if I recall correctly, it started off with a long sound that never changed for as long as I listened and the progress bar never moved. So I assumed it was glitchy and always skipped the track after a few minutes. Now I know it’s just really long. I’ve been reading about them and I want to hear this since I suspect I would like it. I guess I just have to be patient.
[/tiny hijack]
Mine…
Blind Guardian - And Then There Was Silence
Dream Theater - Six Degrees of Inner Turbulence
Gamma Ray - Rebellion In Dreamland (Um… well, it’s close to being long enough! Sources online say 8:45 and 9:45. I don’t have it handy and I have it on a cassette tape anyway, so I can’t verify.)
Love Chronicles - Al Stewart 18:08 - Worth mentioning if only because it was the first time “fuck” was printed on the lyric sheet, and Jimmy Page on guitar.
Class of '58 - Al Stewart - 13:08 - 36 years later and he’s still writing good music. Al’s American Pie.
Honourable mentions
Roads to Moscow - 8:00 - The Germans invade Russian and are driven back by the Russians.
Nostradamus - 9:50 - The prophercies of Nostradamus set to music.
Modern Times - 8:38 - A lament on lost innocence.
Trains - 8:15 - Al’s version of Telegraph Road.
All Al Stewart. Ok I like Al Stewart. Sue me.
To show I’m not completely obssessed,
Another vote for Supper’s Ready
And
Toccata and Fugue - Philip Hii - 7:51 - They said it couldn’t be done, Bach arranged for solo guitar, this is some of the fastest guitar playing ever.
Kanye West’s Last Call. Probably the track that has the biggest decline in quality between your first hearing and your second hearing.
Death Cab For Cutie’s Stability. Tragic that it got cut down to 4 minutes when it became Stable Song on Plans.
Jimmy Eat World’s Goodbye Sky Harbor. Best song based on a John Irving novel ever.
At the risk of getting dumped on, here’s possibly the best-selling one of all:
"Do You Feel Like We Do" from Frampton Comes Alive
Rapper’s Delight by the Sugar Hill Gang.
A few songs I’m not sure of the length of…
John Barleycorn Must Die by Traffic.
Rock Lobster by the B-52s.
What about Bob Dylan’s “Sad Eyed Lady of the Lowlands”? It covered one whole side of an LP and must run at least 11-12 minutes.