Transversales Disques release »Unreleased & Rareties«, spanning 1972–2002, a revelatory collection of short and secret music by electronic music pioneer, Jean Schwarz. He served as an engineer at the CNRS in the Ethnomusicology Department of the Musée de l'Homme in Paris, and was a member of the Groupe de Recherches Musicales from 1969 to 1999.

This compilation allows us to discover some of unreleased rarities from Jean Schwarz’s personal archives and unpublished recordings which were composed for the dance, screen or the performing arts.