The very first and last thing heard (at low volume) on Pink Floyd: The Wall, the incredibly
successful concept album by Pink Floyd -- Almost a hidden "secret", but very crucial to a complete understanding of the album's message.
If a listener turns up the volume and starts playing the album at the beginning (e.g. during the song
In The Flesh?), there is some accordion music and a voice asking "We came in?" The same
accordion music appears at the end of the album during Outside the Wall. Immediately before the
record/tape/CD player cuts out, the same voice can be heard saying "Isn't this where--".
Roger Waters, bassist and principal song writer for the band, frequently uses cyclical imagery and
themes in his work. Usually he is pointing out the hopelessness of trying to overcome anything, as
life will continue to repeat itself. In this case, he is tying together the beginning and end of The Wall to show that even when forced to "tear down the wall" (symbolizing breaking down from the
self-induced protection from the torture and suffering of the outside world; see other analyses of
Pink Floyd: The Wall), one will continually try to rebuild it.
Another suspected explanation is that the two discs (or "sides of a tape") that comprise The Wall are actually out
of order; these two tidbits of sound are the glue that connects the halves together in the proper
order. Probably the most compelling supporting evidence for this theory is the last song on the
"first" disc, Goodbye Cruel World suddenly becomes a haunting note from a suicide victim
rather than a desperate cry for help from a tortured soul.
A similar technique is used by David Lynch in the cult film, Lost Highway.