Re-generated lilypond snippets

out/alterations.pdf

out/alterations.preview.pdf

out/articulations.pdf

out/articulations.preview.pdf

out/bars.pdf

out/bars.preview.pdf

out/beaming.pdf

out/beaming.preview.pdf

out/chords.pdf

out/chords.preview.pdf

out/clefs.pdf

out/clefs.preview.pdf

out/durations.pdf

out/durations.preview.pdf

out/dynamics.pdf

out/dynamics.preview.pdf

out/grace.pdf

out/grace.preview.pdf

out/hierarchy.pdf

out/hierarchy.preview.pdf