\version "2.16.2"

global = {
  \key bes \major
  \time 4/4
}

right = \relative c'' {
  \global
  
  r32 aes, c fis c'8
  \change Staff = "left"
  \stemUp
  d,,32 [ ees f g ]
  \change Staff = "right"
  \stemNeutral
  c ees g, ees 
  \change Staff = "left"
  \stemUp
  bes [ ees bes' g ] 
  \change Staff = "right" 
  c g' ees g, 
  \change Staff = "left"
  aes, [ c f ees ]
  g c ees, c |
  
}

left = \relative c' {
  \global
  
  ees,8 fis32 g b c
  \stemDown
  d,8 c bes4 aes8 g |
  
}

\score {
  \new PianoStaff <<
    \new Staff = "right" \right
    \new Staff = "left" { \clef bass \left }
  >>
  \layout { }
}