\version "2.16.1"

\score {
    \new RhythmicStaff \with {
      \override StaffSymbol #'line-count = #0
      \override StaffSymbol #'staff-space = #(magstep -3)
      \override BarLine #'stencil = ##f
      \override TimeSignature #'transparent = ##t
      \override VerticalAxisGroup
        #'staff-staff-spacing =
               #'((basic-distance . 0)
                  (minimum-distance . 0)
                  (padding . 1.0))
    } {
      \set fontSize = #-4
      \stemDown
      \override NoteHead #'style = #'slash
      b8 r r b ~ b2\fermata
      \stemUp
      \override NoteHead #'style = #'slash
      b8 r r b ~ b2\fermata
    }
} % score

\score {
    \new RhythmicStaff \with {
      \override StaffSymbol #'line-count = #5
      \override StaffSymbol #'staff-space = #(magstep -3)
      \override StaffSymbol #'stencil = ##f
      \override BarLine #'stencil = ##f
      \override TimeSignature #'transparent = ##t
      \override VerticalAxisGroup
        #'staff-staff-spacing =
               #'((basic-distance . 0)
                  (minimum-distance . 0)
                  (padding . 1.0))
    } {
      \set fontSize = #-4
      \stemDown
      \override NoteHead #'style = #'slash
      b8 r r b ~ b2\fermata
      \stemUp
      \override NoteHead #'style = #'slash
      b8 r r b ~ b2\fermata
    }
} % score