\version "2.16.2"

% \header {
%   title = "Main title" % title of \book (implicitely), it may be \bookpart
% }

\paper {
  print-all-headers = ##t
}

music = \relative c' {
  c1 d e f
}

\score {
  \new Staff { \music }
  \layout {}
  \header {
    title = "Score 1"
  }
}

\score {
  \new Staff { \music }
  \layout {}
  \header {
    title = "Score 2"
  }
}