Cantilena refers to a monotonous, repetitive song or chant, often with an almost hypnotic quality. It's a less common, poetic word that suggests something ritualistic or deeply ingrained, like a melody that loops endlessly in the mind.
In the song, the phrase "Cantilena diabólica" (diabolical chant) uses the word to describe a haunting, almost sinister melody that seems to repeat itself, giving the song an eerie, hypnotic atmosphere.
Caetano Veloso's "Noite De Hotel" [Hotel Night] drops us right into a scene of modern isolation and frustration. He's stuck in a hotel room, where the satellite dish only picks up music videos, and he feels a sense of "Diluição em água poluída" [Dilution in polluted water]. It's a feeling of being disconnected and overwhelmed by artificiality, even referencing "Ódio a Graham Bell" [Hate for Graham Bell] and the telephone, especially when facing a "Chamada transatlântica" [Transatlantic call].
He's grappling with a powerful, intelligent woman who "sabe me explicar perfeitamente E não me entende E não me entende nada" [knows how to explain everything perfectly to me And doesn't understand me And doesn't understand anything]. This creates a deep sense of misunderstanding and loneliness. He sees himself as "Estou a zero, sempre o grande otário" [I'm at zero, always the big fool], and composing a song, usually a simple act, feels "tão desesperadamente necessário" [so desperately necessary] for him. It's a raw look at the struggle to connect and create in a world that often feels alienating.