This piece has a unique element towards his approach to tintinnabuli style. It is very transparent, meaning the harmony and as well as the melody moves around a single axis, a center pitch - C - that serves as a static T-voice (I like to refer to it as static). The meldoy is shaped by the parameters of the text, turning it into a speech like flow, which makes it sound very natural. I will briefly explain how the T-voices and M-voices intereact with each other throughout the piece.
One of the highlights of the piece arrives at when the phrase et sanctum nomen ejus* starts. wThere is a 3 octave tutti M-voice, without an accompanying T-voice. This creates a very clear statement in the melody while at the same the obscuring harmony briefly. The 3 octave B natural creates a temporary illusion of leading towards C as a tonic. Rarely used by Pärt, when he gets out of the T-voice and M-voice relationship and accentuates a melody by unison creates a very strong statement. One of the main reasons I have chosen this piece to analyse.
Another highlight of the piece is when there is a perfect 4th interval, 2 static T-voices so to say, are held against each other. While transitioning from the phrase Dispersit superbos mente cordis sui**, Alto section holds their last note G. This reoccurs thorughout the piece again, between different sections, showing the detailed thinking process of timbre and reusing the same material. This also creates a beautiful lingering and unresolved affect.
The text does not necessarily works in concrete block regarding rhythm, thus creating a spontaneous lyricism, but this piece is anything but spontaneous in its construction, and it is a perfect example of displaying the tintinnabuli technique in a very refined form.
In its foundations, it is a series of responses between verse and tutti sections. The solo soprano reciting the text solely, in a static C (as astatic T-voice), they are joined by different vocal lines in turn. The tutti section is a three part texture with different parts of the choirs, sometimes doubled in the octaves.
The M-voice construction is consistently in the lowest parts with two superior T-voices in 1st and 2nd positions. According to Paul Hillier:
"M-voice construction uses a slightly revised version of the method already encountered in Seven Magnificat Antiphons, whereby the number of syllables determines the notes to be used, and is approached by step. Here, the stressed syllable is alternately the pitch centre and, in the next word, the note furthest from the pitch centre is approached by step". 1