Issue 709 in lilypond: Simultaneous music problem

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Status: New
Owner: ----

New issue 709 by xinlangzi: Simultaneous music problem
http://code.google.com/p/lilypond/issues/detail?id=709

1. The content of .ly file as following:
\header {
title = "Music"
}
\new GrandStaff
<<
\new Staff {
\clef treble
\time 4/4
\cadenzaOn
<< c''8 d''8 >> \bar "|"
\cadenzaOff
}
\new Staff {
\clef bass
\time 4/4
s1*1/8 \bar "|"
}

What is the expected output? What do you see instead?
The expected output is the file named "expected.pdf" in attachments
list.But the actual output is the file named "actual.pdf" in attachments  
list.

What version of LilyPond are you using?

lilypond-2.10.33-1 on Ubuntu8.04

Please provide any additional information below.

The following solutions can reach my expectation:

Solution1:

Add "\key c \major":

\header {
title = "Music"
}
\new GrandStaff
<<
\new Staff {
\clef treble
\time 4/4
\key c \major
\cadenzaOn
<< c''8 d''8 >> \bar "|"
\cadenzaOff
}
\new Staff {
\clef bass
\time 4/4
\key c \major
s1*1/8 \bar "|"
}
> >

Solution2:

Add Skip rest:

\header {
title = "Music"
}
\new GrandStaff
<<
\new Staff {
\clef treble
\time 4/4
\cadenzaOn
s1*0 << c''8 d''8 >> \bar "|"
\cadenzaOff
}
\new Staff {
\clef bass
\time 4/4
s1*0 s1*1/8 \bar "|"
}
> >


Attachments:
        expected.pdf  29.5 KB
        actual.pdf  29.6 KB

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