Unit 2 Lesson 8 Introductory Video Script
Course
Music 7
Lesson
Objective
Semester
A
Unit
2
Lesson
8
The student will be able to accurately write ascending C, G, and F Major
scales in Treble Clef and Bass Clef with key signatures.
Visual
Audio
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Have you ever heard a singer complain that a
song isn’t in “their key?” What does that mean?
In very simple terms, it tells us what note is DO
in our major scale.
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One of the most important parts of reading
music is understanding keys. So far we have
been working mostly in the key of C major,
which has no sharps or flats.
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You have also briefly reviewed the circle of
fifths.
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In this lesson we will take a closer look at three
keys: C major, G major, and F major.
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As you know, the circle of fifths includes all 12
major keys.
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They are ordered by fifths—that is, each key is
a perfect 5th interval from the key before it.
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So why are they ordered this way? Each key
appears in the order of how many sharps or
flats it includes.
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We could consider C major the beginning of the
circle because it has no sharps or flats.
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Of course, a real circle has no beginning or end,
so you could move in either direction from C.
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To help you think about the circle of fifths,
picture a color wheel.
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If you know a bit about color theory, you will
know that a color wheel is a circle with all of the
colors on it.
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It includes the primary colors: red, yellow, and
blue.
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It also includes the secondary colors: orange,
green, and purple.
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A detailed color wheel will also show the color in
between, like yellow-green and blue-green on
either side of green.
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That would give you a total of 12 colors on the
wheel.
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You can see that each color is closely related to
the colors on either side of it.
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corner of wheel, as depicted in
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For example, green is closely related to both
yellow-green and blue-green, just as yellowgreen is closely related to both yellow and
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green.
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You can think of the keys in the circle of fifths
the same way. Each key is closely related to
those on either side of it.
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C major, with no sharps or flats, is closely
related to both G major, with one sharp, and F
major, with one flat.
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Likewise, F major is closely related to both C
major, with no flats, and B flat major, with two
flats.
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If you can remember that C major is the only
key with no sharps or flat, you can figure out
any other key by finding its place of the circle of
fifths.
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How do you figure out which key comes next in
the circle? We will review perfect 5th intervals
more later, but for now, take a quick look at your
keyboard-keys-black-musical640334/>
keyboard.
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What is the 5th note in the C major scale? It is a
G.
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If you count the piano keys, you will see that
there are 3 and a half steps between C and G.
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So a perfect 5th interval is equal to 3 ½ steps.
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If you count 3 ½ steps up from any key you will
find the perfect 5th: the same key that comes
next in the circle of fifths.
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To review, C major has no sharps or flats, so a
C major ascending scale is C D E F G A B C.
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G major had one sharp. The G major ascending
scale is G A B C D E F# (f sharp) G.
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And F major has one flat, so its ascending scale
is F G A Bb (b flat) C D E F.
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Once you know what note you want to start on,
you should be able to determine its key
signature.
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And once you can do that, you can easily write
the major scale.