How to move from one grandparent to another

[Han-Wen Nienhuys]

address@hidden writes:
> The following example should illustrate my problem:
> 
> \score {
>      \notes \relative c'' <
>       \context StaffGroup = up <
>           \context Staff = sone { s1 }
>           \context Staff = stwo { s1 }
>       >
>       \context StaffGroup = down <
>           \context Staff = sthree { s1 }
>           \context Staff = sfour {
>               c4 \translator Staff = sthree
>               c \translator Staff = stwo
>               c \translator Staff = sone
>               c
>           }
>       >
>      >
> }
> 
> I would like to move the voice to the upper two staves instead of new 
> staves.
> How can this be done?

I think it should be possible with

  \translator StaffGroup = up
  \translator Staff = stwo
  
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Han-Wen Nienhuys   |   address@hidden   |   http://www.cs.uu.nl/~hanwen