![Music, Piano keyboard, Octave, Pitch class, Major diatonic scale, Major chord, Chromatic scale, Tempered scale, Staff, Clef. Music, Piano keyboard, Octave, Pitch class, Major diatonic scale, Major chord, Chromatic scale, Tempered scale, Staff, Clef.](https://solitaryroad.com/c1060/ole4.gif)
Music, Piano keyboard, Octave, Pitch class, Major diatonic scale, Major chord, Chromatic scale, Tempered scale, Staff, Clef.
![Note names of musical notes keyboard piano frequencies = octave piano keys number tone tones 88 notes frequency names of all keys on a grand piano standard concert pitch tuning German English Note names of musical notes keyboard piano frequencies = octave piano keys number tone tones 88 notes frequency names of all keys on a grand piano standard concert pitch tuning German English](http://www.sengpielaudio.com/KeyboardAndFrequencies.gif)
Note names of musical notes keyboard piano frequencies = octave piano keys number tone tones 88 notes frequency names of all keys on a grand piano standard concert pitch tuning German English
![Note names of musical notes keyboard piano frequencies = octave piano keys number tone tones 88 notes frequency names of all keys on a grand piano standard concert pitch tuning German English Note names of musical notes keyboard piano frequencies = octave piano keys number tone tones 88 notes frequency names of all keys on a grand piano standard concert pitch tuning German English](http://www.sengpielaudio.com/Root-Ratios.gif)
Note names of musical notes keyboard piano frequencies = octave piano keys number tone tones 88 notes frequency names of all keys on a grand piano standard concert pitch tuning German English
![A middle `C` string on a piano has a fundamental frequency of `262 Hz`, and the A note has - YouTube A middle `C` string on a piano has a fundamental frequency of `262 Hz`, and the A note has - YouTube](https://i.ytimg.com/vi/sbxL_uRNLDw/maxresdefault.jpg?sqp=-oaymwEmCIAKENAF8quKqQMa8AEB-AH-CYAC0AWKAgwIABABGGUgZShlMA8=&rs=AOn4CLBUNPwsTNxw-J9LLvahatz_QSGApQ)