You can get yourself a little flash of the past here on UbuWeb as you listen to Frank Zappa reading a fragment of William Burroughs' Naked Lunch, namely the story of the talking asshole.
As 5 minutes of recorded past go you get quite a bit of history. You can almost hear from the audience reactions that this was recorded in the 70s. Frank Zappa's voice is totally Zappaesque as is his choice of material to read.