Lilypond template for solo piano with correct dynamics and pedalling in the MIDI

solo-piano-with-midi.ly

\version "2.18.2"
\language "english"

right = \relative c'' {
  \key c \major
  \numericTimeSignature
  \time 4/4
  \tempo "Whatever" 4=60
  % ...
}

left = \relative c' {
  \key c \major
  \numericTimeSignature
  \time 4/4
  % ...
}

dynamics = {
  \time 4/4
  % ...
}

pedal = {
  \time 4/4
  % ...
}

\score {
  \new PianoStaff = "Piano" \with {
    instrumentName = "Piano"
  } <<
    \new Staff = "right" \with {
    } \right
    \new Dynamics = "dynamics" \dynamics
    \new Staff = "left" \with {
    } { \clef bass \left }
    \new Dynamics = "pedal" \pedal
  >>
  \layout { }
}

\score {
  \new PianoStaff = "Piano" <<
    \new Staff = "upper" \with {
      midiInstrument = "acoustic grand"
    } << \right \dynamics \pedal >>
    \new Staff = "lower" \with {
      midiInstrument = "acoustic grand"
    } << \left \dynamics \pedal >>
  >>
  \midi {
  }
}

Fill out dynamics and pedal with spacer rests ("s" not "r"). Place notes on left and right as per normal.
You should get a correctly typeset score, and correct MIDI.