\version "2.11.65"

One =
\relative c' {
  c d e f |
  g f e d | \mark\default % A
  c d e f |
  g f e d | \mark\default % B
  c1 |
}

Two =
\relative c {
  c1 |
  g1 | \mark\default % A
  \grace c,8 c'1 |
  g1 | \mark\default % B
  c1 |
}

\markup { Score }

\score {
  <<
    \new Staff { \One }
    \new Staff { \clef bass \Two }
  >>
}

\markup { "Part One" }

\score {
  \new Staff { \One }
}

\markup { "Part Two" }

\score {
  \new Staff { \clef bass \Two }
}

\paper { tagline = ##f }