![]() ![]() If you see a key signature with a single F♯, you can bet that the key will be G major or E minor, as those are the two signatures with an F♯.Īll of this may seem a little confusing at this point, but there is an easily understood system behind all of it. Key signatures also clue us in to the key of the song, or the main set of pitches that will be used. If we have a melody with many F♯ notes in it, we can use the key signature with F♯ in it and save ourselves the hassle. By using a key, we do not need to notate a flat or sharp symbol everytime one occurs. They serve as a sort of shorthand method for notating sharps and flats. Key signatures serve a few important functions. "To cancel a double sharp, one now merely writes a single sharp-sign.Music key signatures are an important tool to unlock the secrets of written music. "When a double flat is cancelled by a single flat, and a double sharp by a single sharp, the traditional practice of placing a natural sign before these is redundant, since a single flat or sharp sign cannot mean anything else." Garner Read (1969) concurs. Gould (2011) refers to 'traditional' and 'contemporary' practice. Now we just write the new one - naturals are only needed when moving into the open key with no sharps or flats! We could compare it with the old style of cancelling a key signature with naturals before writing the new one. But you'll find plenty of older music that does it this way. The more modern style is just to write the sharp, even after a double-sharp in the same bar. Possibly the F in the preceding bar (which you have just avoided showing us!) was a double-sharp? In that case, the 'natural-sharp' notation, though not strictly necessary, could be a useful cautionary. It's the old notation for a normal sharp when double-sharps (as on the following note) are in the vicinity. ![]()
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