Pierre Arvay
Marimba A1: G. Perotin
Double album.
The 25 Gadgets and the 21 Éléments can be heard in the Music section of the site.
Possible variations over the course of the pressings: different round record labels (red or white-blue-red), various sleeve printing types (for example ‘glossy’ appearance or not), different sleeve printing companies, different contact details for the Music De Wolfe office in London, pressing of the records in England or Holland.
Maybe also published on audio cassette.