Musaeum Clausum, also known as Bibliotheca abscondita, is a tract written by Sir Thomas Browne first published posthumously in 1684. The book contains short descriptions of supposed, rumoured or lost books, pictures, and objects. The subtitle describes the book as an inventory of remarkable books, antiquities, pictures and rarities of several kinds, scarce or never seen by any man now living.

The music of Musaeum Clausum moves slowly and independently. A constant flow with small variations of speed and intensity with no beginning and no end. The music is very intuitive, very improvised and quite simple in its construction...

​

Hannes Lingens : Drums / Sebastien Beliah : bass / Louis Laurain : Cornet