Easy Way to Figure Out Key Signatures
When you are first learning your musical key signatures, it can feel a little overwhelming. With twelve major keys and twelve minor keys, the sharps and flats pile up fast, and it can be easy to get them all mixed up. While you could hit the flashcards and memorize each key signature one at a time, we are going to save you some time by giving you the best key signature hacks!
Our aim is for you to view the key signature as your trusty guide for identifying major and minor keys. Key signatures let you know the set of accidentals that are within each musical scale. Before we dive in, let's take a look at all of the key signatures you will need to memorize. Remember that each key signature has both a major and minor key. The key signatures that share the same key signature are known as relative keys .
C Major and A Minor
Though we are about to show you some useful tricks, the first thing you need to know when memorizing your key signatures is that there is no trick for C Major or A Minor. Both C Major and A Minor have no accidentals in their key signature, so you will have to memorize these without any hints! The key signature for these keys looks like this:
Major Sharp Keys
When you are approached with a sharp (♯) key in your sheet music , you can determine the corresponding major key by observing the last sharp (or the sharp furthest to the right ) in the key signature. Look at the example below and see the sharp highlighted in green.
To determine the major key, all you have to do itgo one half-step up from the last sharp listed.
- In this example, anA-Sharp is highlighted.
- One half-step up from A-Sharp is B.
- The key is B Major.
Another way to think of this method is to think of the last sharp listed as the leading tone of the major key. In B Major, the leading tone (or 7th scale degree) is A-Sharp.
Now that you know the hack, you can easily use this trick on any other key containing sharps.
Major Flat Keys
If you thought that was easy, our trick for memorizing your major flat keys (♭) is even easier! With flat key signatures, all you have to do islook to the second flat from the right to determine themajor key.
In the example above, notice that a D-Flat is highlighted in green. And just like that,D Flat Major is the key! No additional steps required!
We have to admit, there isone catch with this trick. Since the key of F Major only hasone flat, it's impossible to locate thesecond flat from the right in that key signature. So just like you'll have to wire C Major and A Minor into your brain with no extra help, you'll have to do the same for F Major.
F Major only has one flat: B-flat.
Minor Keys
The true key to memorizing your minor keys is memorizing your major keys first! Once you know which major key signature you are in, you can find its relative minor key in seconds!
To determine the minor key, simply godown aminor third from the major key.
You can think of a minor third as 1.5 steps, three half steps, or one whole-step and one half-step. Choose the method that makes the most sense to you!
Now, let's put this trick into practice! Say you are given the key signature below:
We can determine by using the trick we learned earlier that one half-step up from F Sharp is G, therefore we are in G Major. Now, to find the relative minor key, find the note a minor thirdbelow G.
Looking at the image above, you can determine that therelative minor key for G Major isE Minor.
If this method is a little too confusing, you can also find the relative minor by determining thesixth scale degree in the major key. E is the sixth note (or scale degree) in the G Major scale.
The Order of Accidentals
Memorizing the order of sharps and flats in the key signatures is super helpful when identifying major and minor keys.
The order of sharps is F – C – G – D – A – E – B.
The order of flats is B – E – A – D – G – C – F.
Note that the order of flats is simply the reverse order of the sharps. In reality, you only need to memorize either the order of sharps or flats, not both.
When you have the order of sharps and flats committed to memory, you can visualize the " circle of fifths " in your head to identify major and minor keys. The circle of fifths is a way to remember the order of keys. With C major as the starting point, as you move clockwise in fifths, one sharp is added to the key signature. As you move counterclockwise, you add one flat to the key signature.
Now that you know the secrets, you are well on your way to becoming a key signature expert! All that is left is to practice them!
FAQ
What are the 15 key signatures?
There are 15 major and minor key signatures.
The major keys include: C, G, D, A, E, B, F sharp, C sharp, F, B flat, E flat, A flat, D flat, G flat, and C flat.
The minor key include: a, e, b, f sharp, c sharp, g sharp, d sharp, a sharp, d, g, c, f, b flat, e flat, and a flat.
How do you find key signatures?
In Western musical sheet music, the key signature is located immediately after the treble and bass clefs before the first line of music.
What is the rule for finding minor keys?
The key to mastering minor keys is to first memorize your major keys. To find the minor key, you move down a minor third from the relative major key. A minor third can be seen as three half steps or pitches or as one whole step and one half step. Another way to find the minor key is to identify the sixth scale degree of the major key. The 6th pitch is the minor key.
How do you remember major and minor keys?
You can remember major and minor keys by several methods, but the easiest is by identifying the key using the key signature. To identify a major sharp key, simply move one half step up from the last sharp listed in a key signature, To identify a major flat key, find the second flat from the left in the key. This flat identifies the actual major flat key. After you have confirmed what major scale you are in, you can find the relative minor key by moving 3 half steps down from the major key.
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