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, time signature changes, spacer rests, editorial accidentals marked with the edition's \ficta command, manual melismata, a final bar line, settings that hide the bar lines and the time signature of one staff, and lyrics with hyphens). As in LilyPond, a time signature written in one voice applies to the whole score, and when the score sets no time signature before the music, the one every voice opens with is the score's first. A note that sounds across a bar line, which LilyPond prints whole, is encoded as notes tied across it; a note or spacer that another voice's time signature change falls inside is divided there. 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. Accidentals the edition marks with its \ficta command (printed above the note) are encoded as editorial accidentals (accid with func='edit', place='above').
Each voice carries the text 'Al-le-lu-ya.' as verse 1 of its staff, as in the edition; the long melismata are marked in the edition with manual melisma commands, which decide where the syllables fall. Lyrics, punctuation and spelling are copied from the edition.
The score sets no time signature before the music; every voice opens with 9/8 and changes to 6/8 in the second measure. The 9/8 is encoded as the opening time signature, and the change as a time signature change at the second measure.
The tenor holds its notes over several measures: the edition writes them as breves and dotted half notes, each followed by spacer rests, and hides the tenor's bar lines while it holds them, so that each long note is printed once. MEI measures share their bar lines across the staves, so each long note is encoded as notes tied across the bar lines it sounds through (checks/conversion-report.json, tiedNoteHeadsAddedAtBarLines), and the spacer rests as invisible rests of plain values (spacersWrittenAsPlainValues). The tenor's opening breve sounds through the change from 9/8 to 6/8, which is written in the cantus and the altus; it is divided at the change (eventsSplitAtTimeChangesOfOtherParts). The pitch, onset and length of every tenor note are unchanged.
The edition hides the tenor's bar lines while the tenor holds its long notes (\override Staff.BarLine.transparent, switched on and off in the tenor's music) and hides the tenor's time signatures throughout (\override Staff.TimeSignature.stencil = ##f). These layout settings are read and not encoded: the encoding draws the tenor's bar lines and time signatures like those of the other voices.
Beams follow LilyPond's automatic beaming in 9/8 and 6/8, which the edition leaves on; they are recorded as beams in the MEI. 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.