Yes. This is how I do parts and score.
music =
{
<<
\new StaffGroup <<
\tag #'score \tag #'sop \new Staff \with { instrumentName = #"Soprano Cornet"
shortInstrumentName = #"Eb Cn" } << \global \Marks \SopranoCornetVoice >>
\tag #'score \tag #'solc \new Staff \with { instrumentName = #"Solo cornet"
shortInstrumentName = #"S Cn" } << \global \Marks \SoloCornetVoice >>
\tag #'score \tag #'repc \new Staff \with { instrumentName = #"Repiano cornet"
shortInstrumentName = #"R Cn" } << \global \Marks \RepianoCornetVoice >>
\tag #'score \tag #'c2 \new Staff \with { instrumentName = #"2nd Cornet"
shortInstrumentName = #"Cn 2" } << \global \Marks \SecondCornetVoice >>
>> %staffgroup
#(set-default-paper-size "a4landscape")
#(set-global-staff-size 14)
\score {
\keepWithTag #'score \music
\midi { }
}