Bonus Item!
IBM 1403 Printer (1964) playing music.

The IBM 1403 printer was noisy, but it could also be musical! Clever engineers figured out what line of characters to print to make a noise at a given pitch, and how many times to print that line repeatedly to sustain that pitch for a given duration. In other words, the printer could play musical notes.
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You will never be the same after listening to an IBM 1403 playing "Raindrops Keep Fallin' on My Head".

  thanks to MetaFilter