This MEI file is a mechanical conversion of Monique Rio's edition (St Cecilia Press, https://stcpress.org), which is licensed CC BY 4.0 according to the publisher's statement and the edition's own score footer. Because the licence badge on the publisher's page links to CC BY-SA 4.0, the conversion is released under CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), which satisfies either reading. Attribution: edition by Monique Rio, St Cecilia Press; MEI conversion by Motetus (AEM Ventures SRL). Changes: converted from LilyPond to MEI 5.1; see the encodingDesc and revisionDesc.
https://stcpress.org/about (retrieved 2026-10-21): "Monique's transcriptions are done in Lilypond, and may be used with attribution. (CC By 4.0)"
Footer of the edition's PDF score: "© Monique Rio (CC BY 4.0)"
Footer markup of the edition's score.ly: "© Monique Rio (CC BY 4.0)"
The LilyPond source is read by a strict reader for the subset of LilyPond used by the edition (relative pitches, durations, bar checks, manual beams, time signature changes, two volta repeats each with two alternative endings, a final bar line, and lyrics with hyphens, extenders and skips). As in LilyPond, a time signature written in one voice applies to the whole score. A note that sounds across a bar line, which LilyPond prints whole before the bar line, is encoded as notes tied across it. Accidentals are written where LilyPond's default accidental rule prints them; every altered note also carries its sounding accidental (@accid.ges). Lyrics are attached to notes with LilyPond's \lyricsto rules. Only the first, untransposed \book of the score template is converted. Any construct outside the subset stops the conversion. No music was entered or corrected by hand.
All notes, rests and syllables come from the source edition's LilyPond file at the pinned commit, converted mechanically. Nothing was transcribed from the manuscript for this encoding.
Pitch, onset and duration of every note and the placement of every syllable were checked automatically against the edition's own MIDI file (checks/midi-compare.json).
Accidentals: written accidentals are encoded where LilyPond's default accidental rule prints them in the edition; sounding alterations are given in @accid.ges on every other altered note.
The cantus and the tenor each carry the text, one lyric line per voice, as in the edition; the bassus has no text. Lyrics, punctuation and spelling are copied from the edition.
The edition writes the piece as two volta repeats, each with two alternative endings. The endings are encoded as MEI ending elements (n='1' and n='2', labelled '1.' and '2.'), the first closing with a repeat bar line, as LilyPond prints them. The edition's MIDI file plays the music as written (each repeated section once, then both of its endings), and the MEI is compared with it in that order.
The time signature changes from 2/4 to 3/4 and back, written in the cantus and the tenor; as in LilyPond, they apply to all three staves. In the second 3/4 measure the bassus's half note d begins on the third beat and sounds into the next measure; the edition prints it as one half note before the bar line, and it is encoded as two quarter notes tied across the bar line (checks/conversion-report.json, tiedNoteHeadsAddedAtBarLines). Its pitch, onset and length are unchanged.
Beams are encoded where the edition beams explicitly (the edition switches automatic beaming off). Layout instructions of the edition (page size, staff size, system spacing) and its ambitus signs at the start of each staff are not encoded.
Converted mechanically from the LilyPond source of Monique Rio's edition (St Cecilia Press, commit dcbcfbe) with tools/stcpress.py 1.5.0. No note, rest or syllable was added, removed or corrected by hand.