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Bosendorfer Imperial Grand Piano with 9 extra keys (all black, in the bass) giving it 8 full octaves (C to C); 97 keys total. | Best piano, Piano, Music
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The World's First Nine Octave Piano — The Big Beleura - WORLD PIANO NEWS
The World's First Nine Octave Piano — The Big Beleura - WORLD PIANO NEWS
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Bosendorfer 290
Concert Grand 290 Imperial - Bösendorfer Grands and Uprights - Pianos - Bösendorfer
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