\include "italiano.ly" 
 %son
basse = \relative fa {
        \clef bass
        \key fa \major
        \time 2/2
 \repeat volta 8 {  fa4. sib8 ~ sib4 do4 ~ do4. sib8 ~ sib4 fa4 ~ fa4. sib8 ~ sib4 do4 ~}
\alternative{
{ do4. sib8 ~ sib4 fa4 ~ }
{ do'4. sib8 ~ sib4 fa8^> fa^>}
}
 \bar ":|"
     }
 \score {
<<
       \new ChordNames {\chordmode{fa2 sib do:7 sib fa2 sib do:7 sib do sib4 fa4} }     
     <<   
      \set Staff.midiInstrument = "electric bass (finger)"
      \basse
        >>
>>
   \layout {  
    indent = 0\mm 
   }
 }