showing counterpoint in solo music

[Marc Mouries]

I am typesetting some Bach solo work and want to emphasize the counterpoint. I 
found a way to typeset it like this with 2 voices
\relative c' {
  \time 3/8
  <<
    { f16  d' b g e c  | d b' g e c a' }
    \\
    { f16[ s  s s e s] | d[ s s s c s] }
  >>
}

but that means the score has to be typed twice. Would it be possible to obtain 
the same effect with only one voice? May be special beaming?

-Marc