The Key Signature

Jeff

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The key signature shows what key we are in. For our purpose, it shows what notes need to be sharped.

We have F#:

and C#:

Why Do I Need to Know About the Key Signature?

When playing, you must add the accidental(s) that is/are shown in the key signature. In other words (for the following example), we see that there is an F# and C# in the key signature. So, we play F# and C# instead of F natural and C natural for the whole exercise.