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The other upvoted answers here are good and I don't want to repeat them, but I think that there is a lot to add. Surely the key of C-Sharp Major must exist! So why is it never or rarely used? There are several factors that need to be taken into consideration. Here I list a few: Historical To understand modern scales you need to look at how they ...


Shorter answer: Every note in a scale must be named A, B, C... etc. in ascending order but with as many accidentals like sharp and flat as necessary. Therefore, the note before C# (major 7th) is B sharp (the same as C natural), and E# (same as F natural) is the third which is annoying to work with.


I'm tempted to suggest that this practice actually far predates the creation of keys. I believe Renaissance and Medieval church pieces were often categorized by which of the 8 Church Modes they were written in. This would tell a church musician a lot about the mood, or ethos, of the piece, and aid the singers in knowing what scale to use. Speculating... it ...


Musicians form much closer relationships with keys than with arbitrary numbers. I might not remember which Brandenburg Concerto is which by the numbers, but listing the key really clues me in. This is especially true for composers who wrote a ton of a single type of piece, for example Mozart's piano sonatas or Haydn's symphonies.


Music can and often is transposed to other keys. Sometimes this is done for vocalists who want to be able to sing a song within their range. In classical music it may be a case of the instrumentation in the ensemble that will be performing the piece. Some instruments are easier to play in one key than in another. Regardless of the reason for transposing ...


I agree with Slim. It's quite clear that the English Language translation of accidental implies that it is not on purpose. Therefore it's adaptation for referring to music notation is quite logically used to define an aberration or deviation from what is prescribed in the key signature. To call the sharp symbols or flat symbols in the key signature ...


C sharp major has seven sharps, D flat major has five flats. Out of the box, the latter is preferable. The former may be more appropriate when there is more material requiring "flattening" the key signature than otherwise. Now major is a rather sharp mode, so it's not quite unlikely. For example, a "proper" fully diminuished chord in C sharp features ...


Yes indeed there is a key of C Sharp Major (C# Major). But the key of C Sharp Major is the “enharmonic equivalent” of the key of D Flat Major. What that means is that all of the notes in the C sharp major scale sound pretty much exactly the same (to the human ear) as all the notes in the D Flat major scale – only they are notated (written) differently. ...


I agree, that makes no sense. It's all relative. If keys have "flavors", it's only because of (lack of) familiarity borne of our tendency to play in only a handful of keys. Keys may be all the same, relative, to our ear, but certainly not to the way they lay on a fingerboard.

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