\version "2.19.80"
\include "AccordionStandardBass.ly"


rh = \fixed c' {
  \time 3/4
  \tempo 4=150
  \repeat unfold 10 r2.
}

lh = \fixed c {
  \clef bass
  <>4_4 \xco <>4_3 \xcM \removeWithTag #'chordLetter \xcM
  <>4 \cf 4 \xeo <>4_3 \xcM \removeWithTag #'chordLetter \xcM
  <>4 \cf 4 \xeo <>4_3 \xcM \removeWithTag #'chordLetter \xcM
  <>4_4 \xco <>4_3 \xcM \removeWithTag #'chordLetter \xcM
  <>4_3 \xdo <>4_2 \xgs \removeWithTag #'chordLetter \xgs
  <>4_4 \xgo <>4_2 \xgs \removeWithTag #'chordLetter \xgs
  <>4 \cf 4 \xbo <>4_2 \xgs \removeWithTag #'chordLetter \xgs
  <>4_4 \xgo <>4_2 \xgs \removeWithTag #'chordLetter \xgs
  <>4_4 \xco <>4_3 \xcM \removeWithTag #'chordLetter \xcM
  <>4_2 \xgo <>4_3 \xcM \removeWithTag #'chordLetter \xcM
}


\score 
{  
  \new PianoStaff 
  <<
    \new Staff = "right" {\rh}    
    \new Staff = "left"  {\keepWithTag #'screenOut \lh}
  >>
  \layout { }
}

\score {
  \new PianoStaff 
  <<
    \new Staff = "right" \with { midiInstrument = "accordion"} {\rh}
    \new Staff = "left" \with { midiInstrument = "accordion"} {\keepWithTag #'midiOut \lh}
  >>
  \midi { }
}