Hi Ivan,
> I have been reading the archives, and if I understand
> correctly, the _only_ way to make a hairpin crescendo
> or decrescendo last a duration that is shorter than an entire
> whole or half note is to add a pseudo voice of "invisible
> rests" and notate your hairpins to the pseudo voice.
> Is this really the only way?
No:
\version "2.12.3"
\include "english.ly"
\score {
\new Staff = "voice" {
\autoBeamOn
\numericTimeSignature
\dynamicUp
\clef "treble"
\time 3/4
fs'2\mf (e'8) g'8\mp % m03
([e'8]) r8 g'8\mp ([e'8] g'8\< [e'8] % m04
\time 4/4 af'2*1/4\! s8*3\>) r4\! f'4\mp % m05
}
\addlyrics{ Smear __ Smear __ Smear __ Smear }
}
\layout {
\context {
\Score
\override SpacingSpanner
#'base-shortest-duration = #(ly:make-moment 1 32)
proportionalNotationDuration = #(ly:make-moment 1 8)
}
}
> If so, I find that adding this pseudo voice causes all
> kinds of unwanted consequences such as adjusting vertical
> positions of rests and stem directions in the actual music.
Then you're doing it incorrectly — here's the same snippet, using a "pseudo
voice" for the dynamics:
\score {
\new Staff = "voice" {
\autoBeamOn
\numericTimeSignature
\dynamicUp
\clef "treble"
\time 3/4
<< { fs'2( e'8) g'8[( } { s2\mf s8 s8\mp } >> % m03
<< { e'8]) r8 g'8[( e'8] g'8[\< e'8] } { s4 s\mp s\< } >> % m04
\time 4/4 << { af'2*1/4 s8*3) r4 f'4 } { s8\! s8*3\> s4\! s\mp } >> % m05
}
\addlyrics{ Smear __ Smear __ Smear __ Smear }
}
\layout {
\context {
\Score
\override SpacingSpanner
#'base-shortest-duration = #(ly:make-moment 1 32)
proportionalNotationDuration = #(ly:make-moment 1 8)
}
}
As you will see, there are no "unwanted consequences".
A couple of other hints:
1. You don't have to (and, indeed, shouldn't) use ^\mf to attach your dynamics
— if you want all your dynamics above the staff, you should change it globally
with \dynamicUp (as I did in these snippets).
2. You should review your use of brackets and parentheses (note how I've
adjusted them in these snippets): they do not follow Lilypond conventions, and
may produce "unwanted consequences" someday.
Hope this helps!
Kieren.
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