broken-crescendo-hairpin.ly changing-time-signatures-inside-a-polymetric-section-using--scaledurations.ly clusters.ly contemporary-glissando.ly double-glissando.ly flat-flags-and-beam-nibs.ly flat-ties.ly flute-slap-notation.ly heavily-customized-polymetric-time-signatures.ly laissez-vibrer-ties.ly marking-notes-of-spoken-parts-with-a-cross-on-the-stem.ly non-traditional-key-signatures.ly printing-music-with-different-time-signatures.ly stemlets.ly