\version "2.19.82"
\score
{
\new Staff
<<
\set Staff.instrumentName = \markup "Instrument"
\relative c' { \grace { g16 a b } c1 }
>>
}
\score
{
\new Staff
\with
{
instrumentName = \markup "Instrument"
}
<<
\relative c' { \grace { g16 a b } c1 }
>>
}