\version "2.17.0"
\language "english"
global = {
  \key c \major
  \numericTimeSignature
  \time 4/4
  %\partial 4
  \tempo 4=100
}
 nrS = \override  NoteHead #'color = #red
 nbS = \override  NoteHead #'color = #blue
 nE = \revert  NoteHead #'color
music = { 
  \parallelMusic #'( Right Left) { 
 \relative c'{ \global <g'' c,>4 <f a,>8 e8 <d g,>4 <b d,>4     <c e,>1 \nrS  <b gs>2\arpeggio <c a>2\arpeggio     <c g f>2\arpeggio <c g e>2\arpeggio  } |\break		% right
  \relative c{ \global d,8 a'8 f'4 <f g,>2     c8 g'8 d'4 e2     \clef treble <b' e,>2\arpeggio <e a,>2\arpeggio     <c f,>2\arpeggio <c e,>2\arpeggio  } |		% left
  % bar  Righ
  
  \relative c'{ <a'' f d>4 f8 e8 <d a g>2   \nE  <c e,>2 r4 c8 e8     g4. a8 g4 c4     c4. a8 g4 c,8 d8     <e g,>4. <c g>8 <d f,>4 <e g,>4     <<{c1}\\{e,4 f8 d8 e2}>> \bar"|."  } |		% right
  \relative c{ d'8 a'4. \clef bass <f g,>2     c,8 g'8 d'4 c2     c,8 g'8 e'4 e,8 c'8 g'4     f,8 c'8 f4 e,8 c'8 e4     g,,8 e'8 g4 <f g,>2     <<{r8 g8 a8 f8 g2}\\{c,1}>>  } |		% left
  }
}
musicX = { 
  \parallelMusic #'( RightX LeftX) { 
 \relative c'{ \global <g'' c,>4 <f a,>8 e8 <d g,>4 <b d,>4     <c e,>1 \nbS  \ottava #1  <b gs>2\arpeggio <c a>2\arpeggio     <c g f>2\arpeggio <c g e>2\arpeggio  } |\break		% right
  \relative c{ \global d,8 a'8 f'4 <f g,>2     c8 g'8 d'4 e2     \clef treble <b' e,>2\arpeggio <e a,>2\arpeggio     <c f,>2\arpeggio <c e,>2\arpeggio  } |		% left
  % bar  
  
  \relative c'{ <a'' f d>4 f8 e8 <d a g>2 \ottava #0  \nE  <c e,>2 r4 c8 e8     g4. a8 g4 c4     c4. a8 g4 c,8 d8     <e g,>4. <c g>8 <d f,>4 <e g,>4     <<{c1}\\{e,4 f8 d8 e2}>> \bar"|."  } |		% right
  \relative c{ d'8 a'4. \clef bass <f g,>2     c,8 g'8 d'4 c2     c,8 g'8 e'4 e,8 c'8 g'4     f,8 c'8 f4 e,8 c'8 e4     g,,8 e'8 g4 <f g,>2     <<{r8 g8 a8 f8 g2}\\{c,1}>>  } |		% left
  }
}
chordNames = \chordmode {
  \global
  d2:m7 g2:7   c1   e2 a2:m   f2 c2/e 			% 63-66
  d2:m f2/g   c1   c2 c2/e   f2 c2/e   c2/g g2:7   c1 		% 67-72
}
pianoPart = \new PianoStaff \with {
  %instrumentName = "Pno."
  %shortInstrumentName = "Pno."
} <<
  \new ChordNames \chordNames
  \set PianoStaff.connectArpeggios = ##t
  \new Staff = "right" \with {
    midiInstrument = "acoustic grand"
  } \Right
  \new Staff = "left" \with {
    midiInstrument = "acoustic grand"
  } { \clef bass \Left }
>>
\markup " (1) : code without octave ---------  every thing is OK to the hardcopy"
\score {
  <<
     \pianoPart
  >>
  \layout {
       \context { 
          \RemoveEmptyStaffContext
          \override VerticalAxisGroup #'remove-first = ##t
       }
  }
  \midi { }
}


pianoPartX = \new PianoStaff \with {
  %instrumentName = "Pno."
  %shortInstrumentName = "Pno."
} <<
  \new ChordNames \chordNames
  \set PianoStaff.connectArpeggios = ##t
  \new Staff = "RightX" \with {
    midiInstrument = "acoustic grand"
  } \RightX
  \new Staff = "LeftX" \with {
    midiInstrument = "acoustic grand"
  } { \clef bass \LeftX }
>>


\markup " (2) : I put in \ottava #1 and \ottava #0 -- previous (red note head) become one octave lower ( blue note head)"
\score {
  <<
     \pianoPartX
  >>
  \layout {
       \context { 
          \RemoveEmptyStaffContext
          \override VerticalAxisGroup #'remove-first = ##t
       }
  }
  \midi { }
}