Re: lilypond duet writing

[Simon Albrecht]

Am 24.04.2017 um 03:35 schrieb Margaret Voorhaar:
> I have written a flute  melody which is is complete at 32 bars in length. Is it 
> too late to integrate a second flute part beneath this?

There is no problem at all with that, you can make every change to your 
score that you like :-)
But how?
Normally, you would save the music for the first flute in a variable, 
i.e. instead of just writing

\relative c'' {
…
}

on top-level in the file (that means, not enclosed in any \score or 
other section)
you write

fluteOne = \relative c'' {
…
}

and later you can reference that using \fluteOne.
The second flute part is just entered the same way:

fluteTwo = \relative c'' {
…
}

Now it comes to combining the two. LilyPond has two ways of combining 
music expressions: {} combines them _sequentially_ and <<>> combines 
them _simultaneously_. So all you need after defining those two 
variables with the music is:

<<
  \fluteOne
  \fluteTwo
>>

If you want to really get into using LilyPond and lay a proper 
foundation, the Learning Manual is an absolute must-read. You can find 
it at <http://lilypond.org/manuals.html>, and it really covers all you 
need for a basic understanding of how to use LilyPond and also where to 
find information. Read it completely, and try to understand it well :-) 
I know from experience that starting with LilyPond can be tough at 
times, and often that comes from overlooking things that are described 
in the Learning Manual, sometimes even details that make a big 
difference. But it pays off :-)

Happy LilyPonding and all the best,
Simon