Lyrics alignment
Horizontal alignment for lyrics can be set by overriding the
self-alignment-X property of the LyricText object.
-1 is left, 0 is center, and 1 is right; however,
you can use #LEFT, #CENTER and #RIGHT as well.
\layout { ragged-right = ##f }
\relative c'' {
c1
c1
c1
}
\addlyrics {
\once \override LyricText.self-alignment-X = #LEFT
"This is left-aligned"
\once \override LyricText.self-alignment-X = #CENTER
"This is centered"
\once \override LyricText.self-alignment-X = 1
"This is right-aligned"
}