Lyric discussion by pie21 

Anyone know what the phone conversation is at the end? I get the impression it's one of Wilson's colleagues calling him up about an ending to the song he's thought up, saying how it could be interesting, and so Wilson used THAT for the ending instead :).

Wilson's is the voice on the phone. The song itself seems to act as the voice mail or something. Before the song begins, we hear the phone ringing from the caller's point of view, then the song, then Wilson hanging up after leaving a message. It is also possible that the song is an outgoing message that the caller (Wilson) hears before leaving a message (you know how many people have music as their outgoing messages???) The person that he is calling is not answering...so he is dislocated. ...and then we hear the message that Wilson leaves...One...

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