double beams with two voices

[Brian McMinn]

Yep, I'm new to LilyPond.  I've been merrily hacking
away for a couple of days having a great time but I
can't figure out how to get rid of the "extra" beam.

Here's a sample that shows it:

\version "1.3.84";

\include "paper16.ly";

\include "english.ly";

\score{
  \context ChoirStaff \simultaneous {
    \context Staff = top_staff \simultaneous {
        \clef treble;
        \context Voice = a \notes \relative c' { c4 c8 d8 c2}
        \context Voice = b \notes \relative c' { e4 e8 f8 e2}
        }
    }
}

I want two voices on the same staff (and I want to
write each of them as a separate voice, not as a parts
of a single chord).

How do I get rid of the extra beam?

    Brian McMinn



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