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The original was posted on /r/todayilearned by /u/UndyingCorn on 2025-03-24 10:56:58+00:00.

Original Title: TIL During WWII Steinway & Sons built a piano model called the Victory Vertical. It used only 10% of the metal needed by traditional pianos, and it was so lightweight and compact that it was able to be carried by four people or dropped by parachute.