A piano or piano is a stringed percussion and keyboard musical instrument. An octave is a musical interval in which the ratio of frequencies between sounds is one to two. Green piano.

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A piano or piano is a stringed percussion and keyboard musical instrument. An octave is a musical interval in which the ratio of frequencies between sounds is one to two. Green piano

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Photo credit: © IULIIA / Alamy / Afripics
License: Royalty Free
Model Released: No

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