bassBeautyA = \relative fis,, {
  d4. fis ~ fis4 | e4. gis a4 |
  d,2. cis4      | fis1       |
}

bassBeautyB = \relative fis,, {
  d4. fis fis4 | e4. gis a4                  |
  d,4. d cis4  | fis8 fis fis fis cis' b a b |
}

bassThemeWithoutEnd = \relative fis,, {
  fis8 fis r4 e'8 fis fis, r4 fis8 | r8 fis r4 a'8 b fis, r8 a4    |
  fis8 fis r4 e'8 fis fis, r4 fis8 | r8 fis r4 e'8 fis fis, e e r8 |
  b8 b     r4 e'8 fis b,,  r4 b8   | r8 b   r4 a''8 b b,, r8 cis4  |
  d8 d     r4 e'8 fis d    r4 d,8  |
}

bassTheme = \relative fis,, {
  \bassThemeWithoutEnd
  r8 d   r4 d'8 d d, e e r8 |
}

bassThunder = \relative fis,, {
  fis8 e16 fis8 e16 fis8 e16 fis8 e16 fis8 e |
  fis8 e16 fis8 e16 fis8 e16 fis8 e16 fis8 e |
  fis8 e16 fis8 e16 fis8 e16 fis8 e16 fis8 e |
  d-. d-. d-. d-. d-. d-. d-. d-.            |
}

%% Note: not "bass solo", but "bass" while "solo".
bassSolo = \relative fis,, {
  d2 r8 e4.      | fis2. r4          |
  d2 e           | fis  r8 gis a cis |
  d2 r8 e4 b8    | cis2. r4          |
  b2 r8 cis4 e,8 | fis1              |
}

bassTransition = \relative fis,, {
  \time 3/4
  fis'8. cis d gis, | a8 gis fis r4. |
}

bassFast = \relative fis,, {
  \time 4/4
  fis8 e fis a4 gis8 fis e         |
  cis cis cis gis' cis b a16 b a8  |
  d, d d d d d d d                 |
  cis eis b' fis' b a gis a        |
  fis cis fis b4 a8 gis a          |
  cis b a b a gis fis gis          |
  d b a gis fis gis a b            |
  gis gis gis gis cis-. r8 cis,4   |
}

bassEleven = \relative fis,, {
  \key e \minor
  \time 11/8
  \repeat unfold 3 { e'4 e,8 e e r e r e e r |}
  r f b g' ges c,4 f8 b, e-. ais,
}

bass = {
  \set Staff.midiInstrument = #"electric bass (finger)"
  \clef "bass_8"
  \key fis \minor

  \relative fis,, {
    \time 4/4 R1*4 \bassBeautyA

    \time 5/4 \repeat volta 2 \bassThemeWithoutEnd
    \alternative {
      { r8 d   r4 d'8 d d, e e r8 | }
      { r8 d   r4 fis4 ~ fis2     | }
    }
    \whiteNoise

    \time 4/4                 \bassThunder

    \time 5/4 \repeat volta 2 \bassTheme
    \time 4/4                 \bassThunder

    \time 4/4 \repeat volta 2 \bassBeautyB

    \bassSolo

    \bassTransition
    \tempo 4 = 160
    \bassFast
    \repeat volta 2 \bassEleven
    \bassShifter
  }
}