[tablatures] parallelMusic

[Federico Bruni <brunology@xxxxxxx>]

Hi all,

I have some questions for you ;-)

Some days ago I needed to insert a double glissando and I used the
trick explained here (add a new voice with hidden notes):
http://lsr.dsi.unimi.it/LSR/Snippet?id=303

My problem was how to implement it in the template I often use, which
is set - I think - to be with two voices only. Here it is:

upper= {
}

lower= {
}

\score {
    \new StaffGroup <<
      \new Staff = "guitar" <<
        \context Voice = "upper guitar" { \clef "G_8" \voiceOne \upper }
        \context Voice = "lower guitar" { \clef "G_8" \voiceTwo \lower }
      >>
      \new TabStaff = "tab" <<
        \context TabVoice = "upper tab" { \clef "moderntab" \voiceOne
\upper }
        \context TabVoice = "lower tab" { \clef "moderntab" \voiceTwo
\lower }
      >>
    >>
}

I guess I could add a third variable which acts as a third voice, but
it would not be that handy to write.. and it's not worth to add a new
variable just because I need a third voice in one or two measures in
the whole piece.

So I found out \parallelMusic, which is very interesting and handy
because you can see all the voices in a measure with a single glance
(no need to scroll from one variable to another).
And using \parallelMusic I managed to get what I wanted (double
glissando): please see the easy example attached.

As I'm thinkig I'll use it as my new default template, I wonder which
could be the drawbacks if I use \parallelMusic instead of the template
above..
I mean, I was never recommended to use it by expert users.. so that's
why I'm suspicious ;-)

Thanks for your help!

Federico

-- 
http://gnurag.net/blog/
http://fsfe.org/
http://groups.fsf.org/wiki/LibrePlanetItalia

\version "2.13.8"



\parallelMusic #'(VoiceA VoiceB VoiceC) {
  % Bar 1
  <a c>4 \glissando <b\3 d>2. |
  r4  e,,2. |
  \hideNotes a'4 \glissando b2.\3 |
  
  % Bar 2
  
}

% New template
\new StaffGroup <<
\new Staff { \clef "G_8" \relative c' << \VoiceA \\ \VoiceB \\ \VoiceC  >> }
\new TabStaff { \clef "moderntab" \relative c' << \VoiceA \\ \VoiceB \\ \VoiceC  >> }
>>

%% Old template
%{
  \score {
    \new StaffGroup <<
      \new Staff = "guitar" <<
        \context Voice = "upper guitar" { \clef "G_8" \voiceOne  \upper }
        \context Voice = "lower guitar" { \clef "G_8" \voiceTwo  \lower }
      >>
      \new TabStaff = "tab" <<
        \context TabVoice = "upper tab" { \clef "moderntab" \voiceOne \upper }
        \context TabVoice = "lower tab" { \clef "moderntab" \voiceTwo \lower }
      >>
    >>
  }
%}