My ears pricked up when I heard this playing on the radio earlier today - "Sheep may safely graze" by J S Bach - a piece that's long been a favorite of mine. Here, it's sung beautifully by the University of Redlands choir, California, in 1957. I wonder how many of them are still with us? Enjoy!
Here's the same piece - but this time it's performed / rendered / mangled (you decide) on the Moog synthesiser. From the image of Herr Bach that appears early in the video, you could be excused for thinking that he's been over-indulging with the Bolivian Marching Powder!
Here's another favorite piece, Schubert's "The Trout".. (start at 29:52)