Some extremely old pianos have only 85 keys, ranging from A0 to A7. These pianos are no longer existent today. What's the reason?
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2Not so very old. Cheap 85-key pianos were still being made up to the 1990s, at least, by the likes of Wagner. Perhaps someone knows of more recent examples?– user48353Mar 21 '19 at 9:38
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Heck, you can get cheap electronic KBs with far fewer than 80.– Carl WitthoftMar 21 '19 at 12:57
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I have an 85-key C-to-C piano. Built in the 1940's (I think). It's noticeably smaller than regular upright pianos, and I believe that's why my grandmother chose it for her living room.– Your Uncle BobMar 21 '19 at 17:46
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85 key is A-to-A, not C-to-C, normally. I've only seen A-to-A models.– user53472Mar 22 '19 at 1:48
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1Yes, it's like an 88-key piano but without the lowest three notes.– Your Uncle BobMar 24 '19 at 0:23
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Piano started with way less keys, the first models ranged on five octaves, being derived from harpsichords. Then in the Baroque period the keys increased to 85 keys. The shift to 88 keys happened because Steinway made an 88 key piano, and some composers, like Debussy, started to use it in the 20th century. The extra string also affects a bit the timbre of the piano because aren't dampen, so there's sympathetic resonance.
answered Mar 21 '19 at 10:19
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185 keys was a mid-Romantic period range for the piano. Haydn/Mozart/early Beethoven wrote for a 5 octave piano; Schubert and late Beethoven wrote for a 5 1/2 or occasionally 6 octave piano. Mar 21 '19 at 20:02
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Beethoven's piano ranged from C1 to F7. The 88 keys are from A0 to C8, as everyone knows.– user53472Mar 22 '19 at 1:59