% > I'm not top posting.

% I'm trying to create a score for four voices SATB that uses AikenHeads (shaped 
% notes).  When two parts on the same staff overlap on the same notes (for 
% example soprano and alto), it is customary to show the stems for the two parts 
% going different directions so each part realizes that it is to sing the 
% overlapping notes.

% When I try to do this with LilyPond 2.14.2, 

% 1. The heads face in opposite directions, which obscures the shape of the head.

% 2. I tried suppressing the Note Head for one of the parts (made it 
% transparent), however the stem does not meet the note head of the opposite part.

% Example .ly code follows.  It requires a bit of detail to demonstrate the 
% problem.  I have a screen shot I can provide if that would help (but this 
% interface doesn't accept attachments).

% The bass staff demonstrates #1, the treble staff demonstrates #2.

% Thanks for any assistance


\version "2.14.2"

global = {
  \key a \major
  \time 4/4
  \partial 4
  \aikenHeads
}

ignoreCollide = \override NoteColumn #'ignore-collision = ##t

sopranoNotesVerseOne =  \relative c' {
  \global \stemUp
  cis8 d e e e e e4. fis8 fis e8 ~ e2
}

altoNotesVerseOne = \relative c' {
  \global
  \new Voice {
%    \override NoteHead #'transparent = ##t
    \aikenHeads \stemDown
    cis8 d
  }
  cis cis cis cis cis4. d8 d cis8 ~ cis2
}

bassNotesVerseOne = \relative c {
  \global \stemDown
  cis8 d a a a a a4. a8 a a ~ a2
}

tenorNotesVerseOne = \relative c' {
  \global
  \new Voice {
%    \ignoreCollide \aikenHeads \stemUp
    \aikenHeads \stemUp
    cis,8 d
  }
  a'8 a a a a4. a8 a a ~ a2
}

trebleClef = \new Staff  <<
  \context Voice <<
    \sopranoNotesVerseOne
    \altoNotesVerseOne
  >>
>>

bassClef = \new Staff <<
  \clef bass
  \context Voice <<
    \bassNotesVerseOne
    \tenorNotesVerseOne
  >>
>>

\score {
  << \trebleClef  \bassClef	  >>
  \layout { }
}


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