The title's meaning shifts depending on whether it is read through a Brussels or a global lens:

In the 1976 album by the Belgian progressive rock band Cos , the title serves as a clever, bilingual pun that anchors the record’s duality between domestic intimacy and surrealist exploration. The Linguistic Duality

Pascale Son’s vocal delivery is a cornerstone of the album’s "deep" quality. She treats her voice like a lead instrument, utilizing wordless phonemes , sighs, and precise warbles rather than standard lyrical narratives.

The record features "martial, Zeuhl-like rhythms" mixed with gentle, laid-back jazz-rock. This creates a hypnotic, almost trance-like experience that reviewers describe as "Pink Floyd at 45 rpm".