Hi.
So this week, what we want to talk about
follows on from what Richard
and I illustrated last week, and that was
the concept of tones and semitones.
And what we did was we picked the note C
and
we applied the pattern of tone, tone,
semitone, tone, tone, tone, semitone.
And we called the result the major scale.
So what we can do is we can pick any other
note and apply the
same pattern tone, tone, semitone, tone,
tone, tone
semitone, and the result is a major scale.
So, what we're going to do for the rest of
this lecture is we're
going to refer to that pattern of tones
and semitones as the major scale pattern.
So, we'll pick another note now I'm going
to pick this note here - G.
What I'm going to do is apply the major
scale pattern to that so tone, tone,
semitone, tone, tone, tone, semitone.
Now you'll notice actually when we played
C, we only played the white notes
on the piano, we didn't touch any of the
other ones, these black notes.
When I started on G we need to play this
note here.
And this is called F sharp in this
context.
>> So let's take a closer look at it.
It's called F sharp because it is one
semitone sharper, or higher than F.
[MUSIC]
But you might also notice that by the same
rationale, we
could say [SOUND] that it's one semitone
lower [SOUND] than G.
We could then call it G flat, which means
one semitone lower than G.
You'll remember from last week that a
semitone is a fixed interval.
[MUSIC]
There are semitones between every note
that I played just then.
But you'll also notice there are places on
the piano keyboard where
we have two white notes and no black notes
in between them.
[MUSIC]
It happens between B and C [SOUND] and it
also happens between E and F.
>> Some of you that have come to
this course as guitar payers might already
recognize this.
So if you think about your E strings, for
instance, if you play the
first fret on your E strings, you're more
likely going to call this note F.
And that's the same if you play the first
fret
on the B string, you're more likely
going to call this C.
And that really just serves to illustrate,
just for
a different instrument really, that the
distance between B and
C, the interval B and C is a semitone,
and the interval between E and F is a
semitone.
And that's why if you look back at the
piano keyboard,
there isn't a black note in between these
pairs of notes.
>> You might be thinking that it seems a
bit arbitrary.
That you have a black note between some
pairs
of white notes and there's a semitone
there, and yet,
between other pairs of white notes, you
get a
semitone al by itself with no black notes
in between.
But actually this unevenness, this
asymmetry that we get in the
spread of the note names as they repeat
across the octaves.
This is something that gives eyes and our
ears - more importantly
our ears kind of landmarks that we can
latch on to.
>> So, a minute ago we played G
major.
We started on the note G and we applied
our major scale pattern.
We found that we needed to use an F sharp.
Let's pick another note this time.
Let's pick the note F, [SOUND] and apply
this pattern.
So we get tone, [SOUND] tone, [SOUND]
semitone [SOUND].
Again we've touched another black note
there.
Tone, [SOUND] tone, [SOUND] tone, [SOUND]
and a [SOUND]
semitone between E and F as we've just
discussed.
Now let's look back then at this.
So we've got F [SOUND], G [SOUND].
So, a tone apart.
G, A, which is a tone apart.
And then we've got this black note.
As Nikki said, because this is a
little
bit sharper than A, it's a semitone
sharper than A.
We could call this A Sharp.
But it's also a semitone lower than B.
So we could call it B flat.
So which are we going to call it, in this
case?
Well, as we talked about last week, scales
need one of each letter name.
So, actually, when we go up from F, we're
going to go F to
G, G to A, not to A sharp, because that's
another type of A.
We're going to go to B flat, which is a
semitone above A, or a semitone below B.
And then a tone onto C up to D, E, and
we have another semitone to take us back
to our tonic, F.
>> So it's one thing to understand it,
looking at the piano keyboard.
It is another thing to get it into your
own practice.
You can use a keyboard app, or you can use
a piano if you've
got one, or you can go into your own
instrument, or you can sing.
But this time, start for yourself, do it
for yourself.
Start on D.
[MUSIC]
Figure it out.
Go from D up to D, an octave higher, and
then show yourself what the
pattern of tones and semitones is if
you're just using the, the plain note
names.
And then, go back to that major scale
pattern.
Tone, tone semitone, tone, tone, tone,
semitone.
And then see for yourself what note names
you have
to alter in order to recreate that major
scale pattern.
>> So we should make a little bit of an
apology.
Because what we've been doing is talking
about white notes and black notes,
and clearly that's only really relevant if
we're looking at a piano keyboard.
Guitar players don't have white notes and
black notes, for instance.
The reason that we're doing this, and the
reason that
for this particular lecture we've made it
so piano-centric
is just because the layer of the
keyboard's actually a
really clear and really beautiful way to
illustrate where semi-tones are.
And from that, you can build patterns of
tones and semitones.
So, it is important for you understand
that on your
own instrument, but just be aware that you
can always come
back to this visual, and there there's
Picture of a piano
keyboard in this week's supporting
material on the website for you.
And as Nikki said, you can go on the
internet and find
an app that will do this for you
absolutely no problem as well.
>> So the way to learn this and to
actually understand it is to get
it into your eyes, into your head, and
into your fingers and into your ears.
So, you can practice in all these
different ways.
Practice hearing and playing whole
tones.
Practice hearing and playing semitones.
[BLANK_AUDIO]
