The
____________________
is
the
internal
engine
of
a
piece
of
music
.
It
can
give
us
some
information
about
the
____________________
.
If
we
can
follow
it
easily
,
we
are
listening
to
music
with
____________________
____________________
.
But
not
every
pulse
are
equal
in
____________________
.
Some
of
them
use
to
stand
over
the
others
.
These
are
____________________
beats
.
When
the
stress
is
distributed
regularly
throughout
the
score
,
we
observe
that
they
are
repeated
time
and
time
again
.
We
use
the
words
____________________
o
____________________
to
refer
to
each
group
.
On
the
staff
,
these
groups
are
separated
from
each
other
by
____________________
-
____________________
.
There
are
three
patterns
:
____________________
time
,
____________________
time
and
____________________
time
.
In
all
of
them
,
the
first
beat
sounds
____________________
than
the
others
.
The
rest
of
them
sound
____________________
.
