Key Signatures - By guitarelements.com
You have learned by applying various accidentals to produce the desire "Half and Whole step pattern".
The Sharps or Flats use in a particular scale maybe group together and placed on the staff immediately right after the Clef Sign. This is called Key Signature.
With a key signature, it is not necessary to apply accidentals to each altered note.
The Sharp or Flat in the key signature effects all such notes in any Octave. Unless Suppressed or cancelled by an accidental.
The study of scale can be based on Key Signatures alone. It is advisable to study in details and understand key Signatures.
| Order of sharp >>> |
| F C G D A E B |
| <<< Order of Flats |
| This is how I memorize order of the sharps I devide F C G - D A E B into 2 groups
|
| Keys name - Number of sharp | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| key of G | F# | ||||||
| key of D | F# | C# | |||||
| key of A | F# | C# | G# | ||||
| key of E | F# | C# | G# | D# | |||
| key of B | F# | C# | G# | D# | A# | ||
| key of F# or Gb | F# | C# | G# | D# | A# | E# | |
| Fb | Bb | Eb | Ab | Db | Gb | ||
| key of C# or Db | F# | C# | G# | D# | A# | E# | B# |
| Fb | Bb | Eb | Ab | Db | Gb | Cb |

| Order of sharp >>> |
| F C G D A E B |
| <<< Order of Flats |
| This is how I memorize order of the flats I devide BEAD - GCF into 2 groups
|
| Keys name - Number of sharp | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| key of F | Bb | ||||||
| key of B | Bb | Eb | |||||
| key of E | Bb | Eb | Ab | ||||
| key of A | Bb | Eb | Ab | Db | |||
| key of D | Bb | Eb | Ab | Db | Gb | ||
| key of G | Bb | Eb | Ab | Db | Gb | Cb | |
| key of C | Bb | Eb | Ab | Db | Gb | Cb | Fb |
.