Page:How to Write Music.djvu/25

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HOW TO WRITE MUSIC
17

thirds instead of two halves, by representing a beat-and-a-third and two thirds of a beat (see a, Fig. 8). A beat-and-a-third, if required, should be represented by a note of the value of a beat tied to one of the value of a third, never by a single note equalling both a half note in this case (see b, Fig. 8). A similar principle applies to rests. A measure's silence should be represented by rests divisible into beats, not by rests which fuse a beat and part of the next (see c, Fig. 8). Two dotted quarter notes in twelve-sixteen time are not so bad as a dotted half note in six-eight time, as they correctly represent the division of the measure into two halves, but they misrepresent these halves as consisting of three sixths of a measure whereas they rhythmically consist of two quarters (see d, Fig. 8).

Not good.
{ \override Score.Clef #'stencil = ##f \stemUp \time 6/8 b'2._"(a)" | b'2_"(b)" r4 \bar "||" \time 9/8 b'2_"(b)" r8 b'2 \bar "||" }
Good.
{ \override Score.Clef #'stencil = ##f \stemUp \time 6/8 b'4. ~ b' | b'4. ~ b'8 r r \bar "||" \time 9/8 b'4. ~ b'8 r b'8 ~ b'4. \bar "||" }
Not good.
{ \override Score.Clef #'stencil = ##f \stemUp \time 6/8 r2_"(c)" r4 \bar "||" \time 12/16 b'4._"(d)" ~ b' \bar "||" }
Good.
{ \override Score.Clef #'stencil = ##f \stemUp \time 6/8 r4. r \bar "||" \time 12/16 b'8. ~ b' ~ b' ~ b' \bar "||" }

Fig. 8.