Hi,

This is the second post on the Key-signature series. The first one is here
In this post I will list the key signatures corresponding to major keys using sharps. That is :

• G major
• D major
• A major
• E major
• B major
• F♯ major
• C♯ major

And then discuss the technique to memorise those key signatures

You can check this post and this other post if you want to be comfortable with major scales.

#### List of the major key signature using ♯

###### The key of G major

Here is the key signature for G major :

In the following score, I wrote a G major scale with no Key-signature in the first 2 bars. Then I wrote a new key signature (G major : 1 ♯) and again, the G major scale. As you can see, once the Key-signature is written, there is no need to write the ♯ again.

###### The key of D major

Here is the key signature for D major :

In the following score, I wrote a D major scale with no Key-signature in the first 2 bars. Then I wrote a new key signature (D major : 2 ♯) and again, the D major scale. As you can see, once the Key-signature is written, there is no need to write the ♯ again.

###### The key of A major

Here is the key signature for A major :

In the following score, I wrote a *A major scale with no Key-signature in the first 2 bars. Then I wrote a new key signature (A major : 3 ♯) and again, the A major scale. As you can see, once the Key-signature is written, there is no need to write the ♯ again.

###### The key of E major

Here is the key signature for E major :

In the following score, I wrote a E major scale with no Key-signature in the first 2 bars. Then I wrote a new key signature (E major : 4 ♯) and again, the E major scale. As you can see, once the Key-signature is written, there is no need to write the ♯ again.

###### The key of B major

Here is the key signature for B major :

In the following score, I wrote a B major scale with no Key-signature in the first 2 bars. Then I wrote a new key signature (B major : 5 ♯) and again, the B major scale. As you can see, once the Key-signature is written, there is no need to write the ♯ again.

###### The key of F♯ major

Here is the key signature for F♯ major :

In the following score, I wrote a F♯ major scale with no Key-signature in the first 2 bars. Then I wrote a new key signature (F♯ major : 6 ♯) and again, the F♯ major scale. As you can see, once the Key-signature is written, there is no need to write the ♯ again.

###### The key of C♯ major

Here is the key signature for C♯ major :

In the following score, I wrote a C♯ major scale with no Key-signature in the first 2 bars. Then I wrote a new key signature (C♯ major : 7 ♯) and again, the C♯ major scale. As you can see, once the Key-signature is written, there is no need to write the ♯ again.

#### How to memorise this list ?

###### If you know the key, and want to write the key signature :

The first thing to know, is your major scales. (If you know the A major scale, you know that it's spelled a-b-c♯-d-e-f♯-g♯-a. There is 3 ♯, end of the story.)

The second thing to know, is the order of the sharps. It starts with F♯, and then goes up a perfect fifth, so you get to C♯, and then up a perfect fifth, so you get to G♯, and so on. The list of sharps is : F♯-C♯-G♯-D♯-A♯-E♯-B♯

You can now write the sharps (in A major, it would be 3 ♯) using the right order.

###### If you know the key signature, and want to know the key :

Take the last sharp of the key signature, add a semitone : here is the major key corresponding to the key signature.
For example, if you have a key signature with 4 sharps (F♯-C♯-G♯-D♯). Add a semitone to the last sharp : D♯ plus a semitone is E.
The key is E major. (we will see later that the same key signature can be used to a minor key)
Try to read this post again, and see if you got it : can you connect the keys to their key signatures ?

You can practice using this excellent game too.

Have a nice day
Sebastien

Check out the other articles in this series: