\version "2.18.2"

\header {
  
}


\new PianoStaff <<
  \set PianoStaff.instrumentName = #"Var. IX  "
   \new Staff = "upper" <<
     \time 4/4
     \key bes \major
     \new Voice = "soprano"
     { \voiceOne \relative c'' {
       
       f4 f f f }
     }
     
     \new Voice = "alto"
     { \voiceTwo \relative c'' {
       
       aes4 aes aes aes }
     }  
     
   >>
   
   \new Staff = "lower" 
     \time 4/4
     \key bes \major
     \clef bass
     \relative c {
       
       c4 c c c }
  >>
 
    \layout {
    
   }