## Full example

    \version "2.16.0"
    \include "example-header.ily"

    #(ly:set-option 'point-and-click #f)
    #(set-global-staff-size 24)

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

    cf = \relative c {
      \clef bass
      \global
      c4 c' b a |
      g a f d |
      e f g g, |
      c1
    }

    upper = \relative c'' {
      \global
      r4 s4 s2 |
      s1*2 |
      s2 s4 s
      \bar "||"
    }

    bassFigures = \figuremode {
      s1*2 | s4 <6> <6 4> <7> | s1
    }

    \markup { "Exercise 3: Write 8th notes against the given bass line." }

    \score {
      \new PianoStaff <<
        \new Staff {
          \context Voice = "added voice" \with {
            \consists "Balloon_engraver"
          }
          \upper
        }

        \new Staff = lower {
          <<
    %      \context Voice = "cantus firmus" \with {
    %        \consists "Balloon_engraver"
    %      }
            \context Staff = lower \cf
            \new FiguredBass \bassFigures
          >>
        }
      >>
      \layout {}
      %{\midi {
        \tempo 4 = 120
      }%}
    }