\header {
  title = "test"
  composer = "me"
 
}
\version "2.16.2"
{
  \parallelMusic #'(righthand lefthand){
    %bar1
    d''2\mp b'2|
    d'2 g'2|

     }
  \new PianoStaff<<
    \new Staff << \righthand >>
    \new Staff << \lefthand >>
  >>
}