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.
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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.