"Boma" refers to a port town along the Congo River , which explains the album's iconic cover art featuring hippopotamuses in a river.

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.

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