Do you think there is a true prog album..

I must add my voice on the tarkus question. I think it is one of the best epics ever and I do'nt agree you can cut it to pieces. When does mass change to manticore ? (after the singing it turns to manticore than another singing).

I would also claim that the las 4 parts of "In the thresshold of a dream" is realy one epic suite I call "the dream".

Point of know return I remembered that both "Closet chronicles & "Hoplessly human" were much more than 5 minutes so I did not mention it even though I love this album.

Aaron, do'nt be angry please. I think it's a nice game to play and some found a true solutions (not me unfortunately) but it is just a game. If I'll ask you what music you like you will never consider it's length as a criterion.

one of the best

pavlov's dog

pampered menial

1. Julia (3:10)
2. Late november (3:12)
3. Song dance (4:59)
4. Fast gun (3:04)
5. Natchez trace (3:42)
6. Theme from subway Sue (4:25)
7. Episode (4:04)
8. Preludin (1:39)
9. Of once and future kings (5:27) academic 27 seconds

Crisis in Clay by 5uu's

1. Comeuppance (3:48)
2. Broadside Hits and Near Misses (2:21)
3. How-To's of Self Taught (3:40)
4. Bought the Farm (4:19)
5. Simply Agree (1:38)
6. Goliath in the Sights (4:18)
7. December (2:55)
8. Hunter Gatherer (3:30)
9. What Price Virtue? (3:19)
10. Darkened Door (4:54)
11. Encounter (3:26)
12. Willful Suspension of Disbelief (3:41)
13. Cirrus (3:38)
14. Weaponry (1:11)
15. Absolutely, Absolute (3:48)
16. Ringing in the New Ear (0:42)

Actually the Strawbs had a few good albums with songs all under 5 minutes:

Strawbs - From the Witchwood: 1971

Track listing
Side 1
1. Glimpse Of Heaven (3:50)
2. Witchwood (3:20)
3. Thirty Days (2:50)
4. Flight (4:25)
5. The Hangman And The Papist (4:10)
Side 2
6. Sheep (4:15)
7. Canon Dale (3:40)
8. The Shepherd's Song (2:50)
9. In Amongst The Roses (3:45)
10. I'll Carry On Beside You (3:10)

Total Time: 36:15

Strawbs - Deep Cuts: 1976

Track listing
1. I only want my love to grow in you (2:59)
2. Turn me round (3:43)
3. Hard hard Winter (2:55)
4. My friend Peter (2:15)
5. The soldier's tale (4:15)
6. Simple visions (4:36)
7. Charmer (3:13)
8. Wasting my time (Thinking of you) (2:28)
9. Beside the Rio Grande (4:19)
10. So close and yet so far away (2:59)

Total Time: 33:42

Buckethead - The Cuckoo Clocks From Hell; Avant-garde riffbased prog metal:

1. Descent of the Damned (3:06)

2. Spokes for the Wheel of Torment (2:17)

3. Arc of the Pendulum (2:32)

4. Fountains of the Forgotten (3:22)

5. The Treeman (3:40)

6. Pylegathon (2:35)

7. Travelling Morgue (3:18)

8. One Tooth of the Time Train (3:27)

9. Bedlam's Bluff (3:15)

10. Beaten With Sledges (2:52)

11. Woods of Suicides (3:28)

12. Yellowed Hide (3:28)

13. Moths to Flame (3:13)

14. The Ravines of Falsehood (3:11)

15. The Black Forest (2:12)

16. Haven of Black Tar Pitch (3:19)

17. The Escape Wheel (2:52)

No proper track listing on the web  - had to transcribe.

Not a perfect prog album, but something more than pop:

Blackfield - Blackfield
1. Open Mind (3:50)
2. Blackfield (4:07)
3. Glow (4:00)
4. Scars (3:57)
5. Lullaby (3:29)
6. Pain (3:47)
7. Summer (4:12)
8. Cloudy Now (3:34)
9. The Hole In Me (2:47)
10. Hello (3:09)

Total Time: 36:52

Only two out of ten slightly longer than 4:00!!!