This article advances the proposition that intermediality in electroacoustic and audiovisual composition is more productively understood as the composition of thresholds rather than as continuous media simultaneity. This proposition is approached through A Dama e o Unicórnio, a project developed with poet Maria Teresa Horta within the La Dame à la licorne tapestry cycle. The project unfolds across three articulated instantiations – a book with audio, a staged performance and a sound/audiovisual installation – with their coexistence inviting a reconsideration of the relationships between poetry, electroacoustic composition, image and space. Rather than seeking coherence through a permanent overlay of media, the project constructs this through composed conditions: music as a ‘second text’, managing intelligibility and friction; staging as a device distributing agencies and visibilities; and installation as a situated context in which listening becomes intermittent, lo-fi and threshold-activated. This outlines the electroacoustic writing processes – granulation, correlated feedback delays with comb filtering and analysis–resynthesis cross-synthesis – alongside the Max/MSP performance instrument and six-channel diffusion architecture. Thus, the ‘light tent’ becomes a shared operator between installation and performance, articulating states of ‘rumour’ and ‘emergence’. In turn, intermediality is approached as a passage between regimes of presence, attention and intelligibility.