\version "2.16.0"

\include "common.ly"

upper = \relative c'' {
  \clef treble
  \key c \major
  \time 2/4
  c2 
  \repeat volta 2 {
    d | e
  }
}


lower = \relative c' {
  \clef bass
  \key c \major
  \time 2/4
  c2 
  \repeat volta 2 {
    d | e
  }
}

mpf = \markup  { \dynamic { mp } "-" \dynamic { f } } 

dynamics = {
  s2\mp 
  \repeat volta 2 { 
    s2-\mpf | R2
  } 
}



\score {

  \new PianoStaff <<
    \new Staff = "upper" \upper
    \new Dynamics = "dynamics" \dynamics
    \new Staff = "lower" \lower
  >>
}