As a music theory expert with a deep understanding of scales and key signatures, I can provide you with a comprehensive explanation of the key signature of B major. The key signature is a series of sharps or flats that are placed at the beginning of a staff to indicate the tonality of a piece of music. In the case of B major, it is indeed a major scale, which means it follows a specific pattern of whole and half steps.

The pattern for a major scale is a sequence of whole and half steps: **whole, whole, half, whole, whole, whole, half**. This pattern is known as the major scale formula and is applied to all major scales, including B major. To determine the key signature of B major, we need to apply this formula starting from the root note, which is B.

Let's break it down step by step:


1. Starting from B: The first note is B, and since we are starting the scale, there is no step to consider yet.


2. First whole step: The next note after a whole step from B is C#. This is because the interval between B and C is a half step, and we need to go up by a whole step, which means we must raise C by a half step to C#.


3. Second whole step: From C#, the next whole step is E. There are no sharps or flats between C# and E, so E remains natural.


4. Half step: The next note after a half step from E is F#. This is because the interval between E and F is a half step, and since we are in the key of B major, F must be raised by a half step to F#.


5. Third whole step: From F#, the next whole step is G#. This is because the interval between F# and G is a half step, and we need to go up by a whole step, which means we must raise G by a half step to G#.


6. Fourth whole step: From G#, the next whole step is A#. There are no sharps or flats between G# and A, but since we are in the key of B major, we must raise A by a half step to A#.

7.
Fifth whole step: From A#, the next whole step is C# (again). This is because the interval between A# and B is a whole step, and since we are already at A#, we go up to the next C, which is C#.

8.
Final half step: The final note of the scale is B, which is a half step from C#.

So, the notes of the B major scale are: B, C#, D#, E, F#, G#, A#. When we look at the sharps in this scale, we see that there are five sharps: F#, C#, G#, D#, and A#. This confirms that the key signature of B major has five sharps.

It's important to note that the order of sharps in a key signature follows a specific pattern, which is: F#, C#, G#, D#, A#, E#, and B#. However, in the key of B major, we do not use all of these sharps. The E# and B# are not part of the B major scale, so they are not included in the key signature.

In conclusion, the key signature of B major consists of five sharps, specifically F#, C#, G#, D#, and A#. This key signature indicates that any notes played in the key of B major will be based on these sharps unless otherwise indicated by accidentals within the music.

Now, let's proceed with the next step as per your instructions.

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B major is a major scale based on B. The pitches B, C?, D?, E, F?, G?, and A? are all part of the B major scale. Its key signature has five sharps.Jul 9, 2016read more >>