\version "2.14.2"
\relative c' {
\clef bass 
\override NoteHead #'transparent = ##t
e8 [g, a f g f a e f] \bar " "
\once \override NoteHead #'transparent = ##f a' [c, b e d a] \once \override NoteHead #'transparent = ##f f' [e, g b g e] 
\once \override NoteHead #'transparent = ##f c' [f, e g e c]
}