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

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

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".

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

While based in Brussels, Cos is frequently associated with the due to their whimsical, jazz-inflected sound.