It can be surprising how often a 'pop' song is recorded in a 'hard' key like G♭ major or B major, while the sheet music is published in F or C. And yes, sometimes a piece that was originally in a 'hard' key is adapted for beginners in an 'easy' one. Yes, any piece of piano music can be transposed to any key. In other words, it's not possible for there to be a "missing black note" whatever note the transposition requires, be it black or white, it will be present. Note that F♯ G♯ A♯ is enharmonically equivalent to G♭ A♭ B♭. But there are several different possibilities for black and white keys:Īnd so on. The third note is four half steps above the first and two half steps above the second. Some notes will move from a black key to a white key, or vice versa, but the distance between any two notes, as counted in half steps (semitones), will remain the same.Ĭonsider "do re mi." The second note is two half steps above the first. Whether a key is black or white doesn't affect this. The reason songs can be transposed to different keys and still sound the same is that the relative intervals remain the same after transposition. Would some song be "adapted" but cannot be played due to a missing black key on the piano? (For the singer it is still easier than for the piano player to adjust by one half-tone, but pianists are used to that task.)
Note, that for professional solo singers transposition is done on a regular base, to ensure, that the song finely fits their compass, some classical sheet music is even available in different editions for low/middle/high voice. In earlier times with their old tunings the deviations were bigger and the impact on the melody easily recognizable.Īfter leaving the early learning phase behind, the number of accidentals will no longer correspond to the degreee of difficulty (a claim which most players will disagree with anyway). Therefore you can start your song with any white or black key on the keyboard and use the corresponding number of key to the right or left respectively (keeping the intervals the same, a process called transposition) and the melody will remain recognizable.
As I understand the question, the answer is well-temperedness (one technical term is 12EDO system) or very regular distribution of notes.
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