Longest continuous playing songs


I like (and looking for) continuous playing music, it could be one song or a group of songs that play uninterrupted, the longer, the better. Does anybody have any suggestions?

Thanks for any suggestions,

Steve
sc2
If you like rock, try The Allman Brothers, from "Eat a Peach", Mountain Jam is 33:40 long. Also by the Allman Bros., "At Fillmore East", which is live. 2 LP's, or discs. You Don't Love Me plays for 19:06. In Memory of Elizabeth Reed plays 12:46. Whipping Post plays 22:40. The whole thing is like being there for the whole gig. Great listening.
Not sure if this is a "song" by your definition, but Morton Feldman's *Piano and String Quartet* is one movement and goes on for about 70 minutes or so.
when you burn a cdr make sure in the burning software that under preferences you check "disc at once" and/or make sure the 2 second gap between songs is unchecked. You will then have 80 min of uninterrupted music.
Jethro Tull - Thick as a Brick. Except for the flip, it's one song that's 43:50.