how to display a predefined guitar fretboard inside a \markup block

[Federico Bruni]

There's a way to display a predefined guitar fretboard inside a \markup block?

See below an example of a simple leadsheet: I want to display the chord fretboards below the title. I'm defining the fretboards with \fret-diagram commands, but I wonder if I can avoid it and use the definitions in predefined-guitar-fretboards.ly

\version "2.18.0"

\include "predefined-guitar-fretboards.ly"

myChords = \chordmode {

  g2 e:m7

  a:m7 d:7

}

myLyrics = \lyricmode {

  "This is"2 "my song, "

  "sing with" "me"

}

GuitarFretBoards = \markup {

  \column { "G" \fret-diagram-terse #"3;2;o;o;o;3;" }

  \column { "Em7" \fret-diagram-terse #"o;2;2;o;3;o;" }

}

\bookpart {

  \header {

    title = "Title"

  }

  \paper {

    markup-system-spacing = #'((padding . 10))

  }

  \GuitarFretBoards

  \score {

    <<

      \new ChordNames { \myChords }

      \new Lyrics { \myLyrics }

    >>

    \layout {

      indent = 0

      line-width = 110

      ragged-right = ##f

    }

  }

}