[GreenKeys] Musical Teletype

[Jim Haynes]

Some years back the local symphony orchestra had a guest pianist.  He
played a piece by Prokofiev, and there was something in the program notes
about the composer's interest in "machine-age music".  The pianist
later played an encore, a movement from a Prokofiev piano sonata written
during that period in the composer's life.  As I listened it reminded me
strongly of the final test area at the Teletype factory, where a dozen
Model 28 printers were all running at different speeds printing the quick
brown fox and some other test patterns that showed whether they were
properly adjusted and ready to ship.