Lilypond example

StJamesInfirmary.ly

\version "2.16.2"

tuba = \relative c {
 % Clef, key, midi instrument, etc. is set here
  \clef bass
  \key aes \major
  \time 2/2

  % The music...
  R1*4 \bar "||:" \break
}

\score {
  <<
    % Add the staff to the score (and name it "tuba") here
    \new Staff = "tuba" <<
      \set Staff.instrumentName = #"Tuba"
      \tuba
    >>
  >>
}