238: "Player Piano”

Interesting Things with JC #238: "Player Piano”. The player piano system was invented by Edwin Votey in 1895, & the first player piano was introduced by Melville Clark in 1900. It was driven by song specific piano rolls, which are continuous rolls of paper with holes punched into them. The holes let air get sucked into the system, & when the roll goes over a hole on the tracker bar, a specific note is played.


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239: "Traffic Lights"

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237: "Lee's Legendary Marbles of York Nebraska"