\version "2.19.15"
\paper { #(set-paper-size "a9" 'landscape) }
\header { tagline = ##f }
\score {
  { d''2. b'4~ b' g' }
  \layout {
    \context { \Voice
             \consists "Melody_engraver"
             \override Stem #'neutral-direction = #'() } }
}