atin motets of the 14th and early 15th centuries preserve one of the most complex bodies of lyric poetry from the Late Middle Ages. While vernacular art was flourishing, these pluritextual works maintained a dense, erudite, and allusive Latin that has long hindered scholarly interpretation. Because their meaning is often obscure, research has traditionally focused on musical structure rather than on the literary strategies that shape the motet as a poetic object.

This paper investigates the modes of textual invention in Latin motets by analysing their intertextual mechanisms, rhetorical organisation, and broader literary framework. It considers the major French sources and examines how composers drew on classical, biblical, and patristic materials, as well as on florilegia and mnemonic practices. Rather than merely identifying quotations, this research seeks to characterise different forms of borrowing (citation, allusion, discursive resonance) and to understand how they evolve across the corpus.

Digital methods play a central role: TEI encoding enables fine-grained annotation of stylistic features and standardisation of data, while NLP approaches, including LatinBERT, assist in detecting textual reuse and semantic patterns at scale. These tools complement traditional expertise, revealing previously unknown intertextual links and restoring the literary richness of this challenging repertoire.