I was a big fan of E.G. Marshall's radio plays back in the 1970's. Subsequently, I discovered them all online and have reviewed several of them. CBC radio theater which was just down the street from my apartment in Toronto in the 1980's used to do radio plays as well. In the 1990's I was in the habit of listening to the radio plays by the midwesterner Garrison Keeler. Radio plays demand you have your eyes shut and create scenese in your mind's eye based on sound alone. The 3D binaural audio technique takes the experience a whole generation beyond "ordinary stereophonic" sound. Try this 5 minute play using headphones and see what you think. It was created by "PureThoughtMedia" 4 years ago and they've produced nothing since then.