A
pentatonic
scale
is
a
musical
scale
with
notes
per
octave
in
contrast
to
a
(
seven
-
note
)
scale
such
as
the
major
scale
and
minor
scale
.
scales
are
very
common
and
are
found
all
over
the
.
They
are
divided
into
those
with
(
hemitonic
)
and
those
(
anhemitonic
)
.
Anhemitonic
pentatonic
scales
can
be
constructed
in
many
ways
.
One
construction
takes
five
pitches
from
the
circle
of
fifths
starting
on
C
,
these
are
C
,
G
,
D
,
A
,
and
E
.
the
pitches
to
fit
into
one
octave
rearranges
the
pitches
into
the
pentatonic
scale
:
C
,
D
,
E
,
G
,
A
.
Another
construction
works
backward
:
It
omits
pitches
from
a
diatonic
scale
.
If
one
were
to
begin
with
a
C
major
scale
,
for
example
,
one
might
omit
the
fourth
and
the
seventh
scale
,
F
and
B
.
The
notes
,
C
,
D
,
E
,
G
,
and
A
,
are
transpositionally
equivalent
to
the
keys
on
a
piano
keyboard
:
G
-
flat
,
A
-
flat
,
B
-
flat
,
D
-
flat
,
and
E
-
flat
.
the
third
and
seventh
degrees
of
the
C
major
scale
obtains
the
notes
for
another
transpositionally
anhemitonic
pentatonic
scale
:
{
F
,
G
,
A
,
C
,
D
}
.
Omitting
the
first
and
fourth
degrees
of
the
C
major
scale
gives
a
third
pentatonic
scale
:
{
G
,
A
,
B
,
D
,
E
}
.
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