A sign indicating a momentary departure from the key signature by raising or lowering a note. The term can also indicate the note raised or lowered.

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33
votes
6answers
1k views

What's the difference between a G♭ and an F#?

I've heard it said that, whilst on most instruments these notes are played with the same fingerings/technique/etc there is a subtle difference. This isn't specific to this particular note ...
26
votes
4answers
2k views

Purpose of double-sharps and double-flats?

In a few pieces of music I have read through, I have come across double-sharps and flats. To my understanding, they are two semitones above/below the note indicated. What is, then, the point of ...
9
votes
2answers
798 views

Can an accidental carry over to the next measure?

I have been practicing this piece (The Stars and Stripes Forever) for a while. On the first note of the second measure of the second line, there is a natural sign. I have always understood accidentals ...
7
votes
4answers
437 views

Is G sharp major a real key?

I'm mostly self-taught, so I don't know much in the way of theory beyond the basics. I have heard of G sharp Major a few times. I believe a scale in the key goes as such: G♯, A♯, B♯, C♯, D♯, E♯, Fx, ...