Aligning bar numbers
Bar numbers by default are right-aligned to their parent object. This
is usually the left edge of a line or, if numbers are printed within a
line, the left hand side of a bar line.  The numbers may also be
positioned directly over the bar line or left-aligned to the bar line.
\relative c' {
  \set Score.currentBarNumber = 111
  \override Score.BarNumber.break-visibility = #all-visible
  % Increase the size of the bar number by 2
  \override Score.BarNumber.font-size = 2
  % Print a bar number every second measure
  \set Score.barNumberVisibility = #(every-nth-bar-number-visible 2)
  c1 | c1
  % Center-align bar numbers
  \override Score.BarNumber.self-alignment-X = #CENTER
  c1 | c1
  % Left-align bar numbers
  \override Score.BarNumber.self-alignment-X = #LEFT
  c1 | c1
}
  ![[image of music]](../5c/lily-9c187559.png)