\version "2.18.2"

% C Major Scale on the right hand
CMajorScaleR = {
  % Ascending
  c16-1 d e f-1 g a b
  c-1 d e f-1 g a b

  % Descending
  c-5 b a g f-1 e-3 d
  c-1 b a g f e d

  c4

  \bar "|."
}

% C Major Scale on the left hand
CMajorScaleL = {
  % Ascending
  c16-5 d e f g-1 a-3 b
  c-1 d-4 e f g-1 a-3 b

  % Descending
  c-1 b a g-1 f e d
  c-1 b a g-1 f e d
  }
s
  c4

  \bar "|."
}

global = {
  \key c \major
  \numericTimeSignature
  \time 8/4
}

right = {
  \global

  \autochange \relative c' {
    \CMajorScaleR
  }
}

left = {
  \global

  \autochange \relative c {
    \CMajorScaleL
  }

}

\score {
  \new PianoStaff \with {
    instrumentName = "Piano"
  } <<
    \new Staff = "up" \right
    \new Staff = "down" { \clef bass \left }
  >>
  \layout { }
}