As
we discussed in part one of this series,
there are additional rhythmic symbols that can be added to the fundamental
rhythmic values found in musical notation.
The two primary additional rhythmic symbols are dots and ties. A dot next to a rhythm increases the value of
the rhythm by half the amount of its original value. This is not to be confused with a dot placed
under or above the note head which is a staccato (indicates to play the note
with a short and separated articulation).
If
a dot were to be placed next to a half note, in 4/4 time, the result would be a
3 beat long rhythm. The half note in 4/4
time has a rhythmic value of 2 beats.
The dot adds half of this value to the overall rhythm. In this case, that means that the dot adds 1
beat. This additional beat combined with
the original 2 beats results in a total rhythmic value of 3 beats.
If
a dot were to be placed next to a whole note, in 4/4 time, the result would be
a 6 beat long rhythm. The whole note in
4/4 time has a rhythmic value of 4 beats.
The dot adds half of this value to the overall rhythm. In this case, that means that the dot adds 2
beats. This additional 2 beats combined
with the original 4 beats results in a total rhythmic value of 6 beats.
The other additional rhythmic
symbol is the tie. A tie is a curved
line that connects two notes of the same pitch.
The two pitches are played as one (unbroken) pitch. The tied rhythm is held for the combined
rhythmic value of the two rhythms. Simple
tie combinations (such as two half notes tied together in 4/4 time) result in
rhythm values that could also be drawn using fundamental rhythms (such as using
a whole note instead of the above stated tie example).
The real reason the tie was
invented was to create rhythmic values that would not fit within one
measure. For example, a 4/4 measure only
allows four beats per measure. Drawing a
rhythmic value that exceeds 4 beats would be impossible in this time
signature. In addition, when the first
three beats of the measure have been taken up by other rhythmic values then
only one beat of space remains. In this
type of situation, drawing even a half note (valued at 2 beats in 4/4 time)
would be impossible. We draw these
rhythms that extend beyond the boundaries of one measure by distributing the
rhythmic value across multiple measures using tied rhythms.
Finally, let’s discuss the rules regarding
stem direction in musical notation. As
stated in part one of this lesson series,
stems can either go up or down from a note head. Stems that go up attach to the right side of
the note head and stems that go down attach to the left side of the note
head. Every pitch below the 3rd
line of the staff has the stem going up.
Every pitch on or above the 3rd line of the staff has the
stem going down.
There is no musical reason for
these rules regarding stems. Stem
direction does not affect the rhythmic value or pitch of a note. The only purpose for these rules is to keep
the sheet music neat and legible. If low
pitches had stems going down, the stems may extend into the notation of the
next line of music below that one (especially if the next line contained high
pitches with stems going up). The rules regarding
stem direction help to keep each note oriented over its staff without extending
too far into the staff above or below.
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