Beams across bars across systems

[Bart Diels]

L.S.,

As a Lilypond newbie I encounter problems with the following.

In a certain part of the piece I am trying to encode, the melody line
typically exists of an alternation of quaver rests and quavers. All quavers
that belong to one phrase are linked by beams. Those beams usually go across
bar lines. As many phrases do not begin on the first quaver of a measure
(and therefore do not end on the last quaver of a measure), almost every bar
line is crossed by a beam. But, as page width is not infinite, beams do not
only cross bar lines, but systems as well.

What I would like to obtain, are systems in which the last bar ends with a
beam sticking out, followed by a system in which the first bar begins with a
beam leading to the first quaver.

I can't get that right: I end up with a score in which the last system just
runs off the page, with may bars disappearing into nothingness.

Here is a simplified and exagerated example of what I am trying; imagine
this being a fragment of the first violin part of a string quartet. How
could this be made to work?

Best wishes,

Bart Diels 

\version "2.7.11"
  
    melody = \relative c' {
    \clef treble
    \key a \major
    \time 6/8
    r8 fis8[ r8 <fis a>8 r8 <a cis>8
    r8 <b d>8 r8 <g' a>8] r8 <a, cis>8[
    r8 <g a>8] r8 <g' cis>8[ r8 <fis a>8
    r8 <cis f>8 r8 <b dis>8 r8 cisis8
    r8 <b d>8 r8 <g' a>8] r8 <a, cis>8[
    r8 <g a>8] r8 <g' cis>8[ r8 <fis a>8
    r8 <cis f>8 r8 <b dis>8 r8 cisis8
    r8 <b d>8 r8 <g' a>8] r8 <a, cis>8[
    r8 <g a>8] r8 <g' cis>8[ r8 <fis a>8
    r8 <cis f>8 r8 <b dis>8 r8 cisis8
    r8 <b d>8 r8 <g' a>8] r8 <a, cis>8[
    r8 <g a>8] r8 <g' cis>8[ r8 <fis a>8
    r8 <cis f>8 r8 <b dis>8 r8 cisis8
    r8 <b d>8 r8 <g' a>8] r8 <a, cis>8[
    r8 <g a>8] r8 <g' cis>8[ r8 <fis a>8
    r8 <cis f>8 r8 <b dis>8 r8 cisis8
    r8 <b d>8 r8 <g' a>8] r8 <a, cis>8[
    r8 <g a>8] r8 <g' cis>8[ r8 <fis a>8
    r8 <cis f>8 r8 <b dis>8 r8 cisis8
    r8 <b d>8 r8 <g' a>8] r8 <a, cis>8[
    r8 <g a>8] r8 <g' cis>8[ r8 <fis a>8
    r8 <cis f>8 r8 <b dis>8 r8 cisis8
    r8 <g a>8] r8 <g' cis>8[ r8 <fis a>8
    r8 <cis f>8 r8 <b dis>8 r8 cisis8
    r8 <cis, f>8[ r8 <f a>8 r8 <g b>8
    r8 <bes d>8 r8 des'8 r8 <bes, d>8]
    r8 <g b>8[ r8 <a c> r8 <cis e>8
    r8 <cis f'>8 r8 <f cis'>8 r8 <cis, eis>8]
    r8 <cis fis>8[ r8 <g c>8 r8 <a b>8
    r8 <bis eis> r8 <gis, cis>8 r8 <g a>8]
    r8 <cis fis>8[ r8 <g c>8 r8 <a b>8
    r8 <bis eis>8 r8 <gis, cis>8 r8 <g a>8]
    }

\score {
        \new Staff \melody
        \layout { }
        \midi { \tempo 8=360 }
     }