Key Signature

Of course, we can write out each sharp, flat, and natural for every note, but there's an easier way. Using a Key Signature, we can dump all the accidentals at the beginning of each line of music.

However, although it may seem that we can put any accidental on the Key Signature, this is not the case. There are rules in using the Key Signature, and we can only put certain accidentals in certain orders determined by Keys (i.e. C Major, A minor, etc.).

Sharps

The order of sharps is F, C, G, D, A, E, B. If we want a G, we must write out all the other sharps before G, including F and C. If we want a E , we must write out F, C, G, D, and A.

A common mnemonic device to help you memorize the order of sharps is "Fat Cats Go Down Alleys Eating Bologna.&quot


Flats

The order of flats is B, E, A, D, G, C, F. The same rules that apply to sharps also apply to flats.

A common mnemonic device to memorize the order of flats is "BEAD Gum Candy Fruit.

Note: Naturals are only written on the Key Signature if a previous section of music has a key signature and the composer doesn't wish to continue his/her piece in the previous key.

If you want to learn about keys, you can find more information in the additional information section at the end of the Reading Music Tutorial.

Review

  1. We can write all accidentals in a Key Signature at the beginning of a piece of music.
  2. The order of sharps is F, C, G, D, A, E, B.
  3. The order of flats is B, E, A, D, G, C, F.

« Naturals