strict notespacing with lyrics

[Johannes Roeßler]

Hi,

any ideas how to get a more even - ot lets say rhytmic - distribution of 
the notes with lyrics?
In this example I don't like the gap after the 4th quaver in the upper 
voice caused by the long syllable "Herrn" in the second voice.
I know, it will become ugly for very long syllables - but may be there 
is a way to get a little bit more even spacing?
(and yes - I searched the archive - but maybe my english isn't good 
enough to find the matching search terms :( )

-------------8<----------------------

\version "2.19.58"

global = {
  \autoBeamOff
}

soprano = \relative c'' {
  \global
  a8 a a a a a a4
}

alto = \relative c' {
  \global
  a4 a8 a a4 a8 a
}

sopranoVerse = \lyricmode {
  sein, da -- heim zu sein da -- heim
}

altoVerse = \lyricmode {
  sein bei dem Herrn und da
}

\score {
  \new ChoirStaff <<
    \new Staff  \soprano
    \addlyrics { \sopranoVerse }
    \new Staff  \alto
    \addlyrics { \altoVerse }
  >>
}

------------->8----------------------

cheers Joei