Guitar tabs and fret diagram

[Helge Kruse]

Hello,

writing a piece for guitar I include tabs. At some difficult I want 
additionally write a fret diagram to show, how to set the fingers. Maybe 
most guitar players think that's overkill, but the player should see as fast 
as possible how to set the left hand fingers.

When I add fret diagrams to the melody. It will be display above the score 
as well as above the tabs. That is overkill. How can I achieve my goal?

Is there a way to "filter out" the fret diagrams? If I watn to generate a 
PDF without the, can I define a function or set any variable to suppress 
them?

Best regards,
Helge


\version "2.11.32"

halfnote = {\once \override NoteHead #'duration-log = #1 }

melody = \relative c
{
\key d \major
\time 4/4

\halfnote d8 ^\markup \fret-diagram #"6-x;5-x;4-o;3-2;2-3;1-2;"
    a' d fis
\halfnote a,, ^\markup  \fret-diagram #"6-o;5-o;4-2;3-2;2-2;1-o;"
    e' a cis |
}

\score {
<<
 \context Staff = Guit
 <<
  \clef "G_8"
  \new Voice \melody
 >>
 \context TabStaff = Tab
 {
  \override TabStaff.Stem #'transparent = ##t
  \override TabStaff.Beam #'transparent = ##t
  <<
   \new TabVoice \melody
  >>
 }
>>
}