Here, there is another problem, that being how one may denote a natural note. This is where the natural symbol ()is used. Like the sharps and flats, it is placed before the note. Key signatures simplify the writing many folds.
For example, the key signature used for a song written in C# and Cb (B) are as follows:
An example of a key signature usage is as follows. The one above has no key signatures but the one below does.
Example with a Simple Song: Twinkle Twinkle
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