\version "2.19.45"
myMusic = \relative {
  d'4 e g2 |
}

\score {
  \new StaffGroup <<
    \new Staff { \clef "treble_8" \myMusic }
    \new TabStaff { \clef "moderntab" \new TabVoice \myMusic }
  >>
  \layout { indent = 0 }
}