\version "2.4.0"
\score {
\relative c' { 
\time 2/2
\key c \major
\partial 2 c4 d \repeat volta 2 {
e f g a |
f g a b |
}
\alternative{
{ c r r d  }
{ c'2 r }  }
} 
 \midi { \tempo 2 = 70 }
}