Te Deum employs Pärt's signature tintinnabuli compositional style. Tintinnabuli is often described as a minimalistic compositional technique, as its harmonic logic departs from that of the tonal tradition of Western classical music, creating its own distinct harmonic system. Tintinnabulation is a process in which a chosen triad encircles a melody, manifesting itself in specific positions in relation to the melody according to a predetermined scheme of adjacency. In its most rudimentary form, Pärt's tintinnabuli music is composed of two main voices: one carries the usually stepwise melody (M-voice) while the other follows the trajectory of the melody but is limited to notes of a specific triad (T-voice). In the case of Te Deum, it is a D triad that is featured in the T-voice, and as such provides the harmonic basis for the entire piece.