ok, here is the cut !!
(The time indicates when the part starts. It ends when the next part starts... don't bleed on each other, please, you six-strings vampires !!)
Verse 1 - 0:00
Verse 2 - 0:36
Verse 3 - 0:55
Verse 4 - 1:11
Verse 5 (trumpets) - 1:28
Verse 6 - 1:44
Verse 7 - 1:59
Verse 8 - 2:17
Verse 9 - 2:32
Verse 10 (trumpets) - 2:49
Verse 11 (trumpets) - 3:05
Verse 12 (empty) - 3:22
Verse 13 - 3:39
Verse 14 - 3:56
Verse 15 (trumpets) - 4:12
Verse 16 (trumpets) - 4:29
Verse 17 (trumpets) - 4:45
I divided into a lot of little pieces, but i doubt there are 17 people that wanna join !! So feel free to use 2 or 3 slots if you do feel inspired. Shy ones can just use one verse.
The piece is a repetition of the same pattern over and over, with an extended variation when trumpets kick in.
For the "trumpets" verses, I don't recommend soloing wildly over them, but rather try to "voice" them or play "Q&A", or something like this. Because they play a melody, it would sound too "busy" with a solo on top of them. Try to integrate them in your solo, in those ways or your own way

(just my two euros, but do as you feel !!)
Have fun !!
Thanks Led Zep ! Hope to hear EBP on this one, and all the newcomers I didn't have a chance to salute.