1\version "2.16.0"
2\header{
3  texidoc="
4Staff margins are also markings attached to barlines.  They should be
5left of the staff, and be centered vertically with respect to the staff.
6They may be on normal staves, but also on compound staves, like the
7PianoStaff.
8"
9}
10
11\layout {
12  ragged-right = ##t
13}
14
15
16
17
18
19
20\new StaffGroup <<
21  \context PianoStaff <<
22    \new Staff    {
23      \set PianoStaff.instrumentName = "Piano"
24      \set Staff.instrumentName = "Right" { c''4 }}
25    \new Staff {
26      \set Staff.instrumentName = "Left"
27      \clef bass c4
28    }
29  >>
30
31  \lyrics {
32    \set vocalName = "bert"
33    blah
34  }
35  \new Staff { c''4 }
36>>
37