Go ahead and sue me if the list is wrong and too long:
Most beautiful and sad
ones:
PF - Paint Box (sad
musically, ... maybe even lyrically)
PF - Burning Bridges
PF - Mudmen
PF - Shine on You Crazy
Diamond, pt. 2
Genesis After the
Ordeal
Genesis Blood on the
Rooftops
King Crimson Trio
King Crimson Night
Watch
King Crimson The
Sheltering Sky
PF Vera
Most emotional ones
(more than just beautiful, mayhaps sad ones):
PF - Time (I wouldn't
call it particularly sad)
PF - The Great Gig in
the Sky
PF - Welcome to the
Machine (dramatic, but not really depressing)
Genesis For Absent
Friends (also not particularly sad)
David Gilmour So Far
Away (emotional, but not really depressing)
King Crimson Starless
(well, the first half of it, actually)
ELO Shangri-La
King Crimson I Talk to
the Wind
Robert Wyatt Sea Song
(again, dont confuse depressing with emotional)
Robert Wyatt Little Red Robin Hood Hit the Road
Most beautiful ones:
PF -
Cirrus Minor
PF - Cymbaline
PF - Julia Dream
PF - Remember a Day
PF - See-Saw
PF - Crying Song (not
exactly sad in a genuine way, I think)
PF - A Pillow of Winds
PF - Wot's ... Uh the
Deal
Genesis Fireside Song
Genesis In Hiding
Genesis Visions of
Angels
Genesis Looking for
Someone
Genesis Seven Stones (hel-lo-o)
Genesis Harlequin
Genesis Suppers Ready
(like I had a reason not to put it here)
Genesis More Fool Me
King Crimson In the
Court of the Crimson King
King Crimson Lizard
King Crimson Islands
King Crimson Prelude:
Song of the Gulls (also an instrumental composition, not a song)
King Crimson Exiles
Matching Mole Signed
Curtain
Matching Mole
Immediate Curtain (for the psychologically disturbed ones; theres a whole lot
of beauty than emotion)
Soft Machine Carol Ann
(again, partly sad, partly sweet; and I wouldnt gamble)
Yes Heart of the
Sunrise (oh, God, again, partly sad, partly sweet; and I wouldnt gamble)
Yes Close to the Edge
(well, it is beautiful for the most part)
Yes And You And I
(emotional, not sad)
ELO Telephone Line
Radiohead Everything
is in the Right Place
The Beatles Fixing a
Hole
The Bealtes Shes
Leaving Home (hel-lo-o)
Led Zeppelin The Rain
Song
Honorable Mentions:
PF - Green is the Colour
PF Is There Anybody
Out There (corny sad, Id say)
The Mothers of Invention
Go Cry on Somebody Elses Shoulder
The Mothers of Invention
How Could I Be Such a Fool
Yes We Have Heaven
Genesis Lamia
Genesis Horizons (but
its really an instrumental composition, not a song)
Genesis In the Rapids
Genesis Dusk
Soft Machine Moon in
June
Mahavishnu Orchestra
with John McLaughlin A Lotus on Irish Streams
Rick Wright
Mediterranean C
Rick Wright Against
the Odds (just introspective)
Robert Wyatt Alifib
(partly sad, partly sweet; I wouldnt gamble)