bassIntro = \relative fis,, {
  \time 4/4
  R1*4 |
  cis8 r r4 r4 r8 b |
  cis8 r r4 r4 r8 b |
  cis8 r r4 r2 |
}

bass = {
  \set Staff.midiInstrument = #"electric bass (pick)" % finger
  \set Staff.pedalSustainStyle = #'bracket
  \clef "bass_8"

  \key cis \minor
  \bassIntro
}