\version "2.19.20"

\header {
  title = "Piano Score"
  subtitle = "For Finale challenge"
  piece = "Score"
  copyright = "©"
  tagline = ##f
}

\paper {
  ragged-right = ##f
}

global = {
  \tempo "Ad libitum" 4=120
  \key d \major
  \time 6/8
  s2.
  \bar "|."
}

right = \new Voice <<
  \global
  { R2. }
>>

left = \new Voice <<
  \global
  { R2. }
>>

\score {
  \new PianoStaff \with {
    instrumentName = "Piano"
  } <<
    \right
    \left
  >>
}