...best part of 50 years ago, the ops for the ICL 1900 series I started work on had a program, loaded from paper tape, that would play a recognisable version of the 1812 overture if the "cpu speaker" * volume was turned up. It had to be run under Exec, and not George, though.
* the speaker would play a series of "clicks" representing the processing being carried out, and was regularly used to determine whether what was being run was "in a loop".
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