For more than fifty years, vinyl collectors and music archivists from around the world have speculated about this ultra-obscure twelve-song demo-only disc from the 1960s: When was it pressed? Who were the musicians and the singers? Who produced this gem? What was the purpose of the record, especially considering the high talent level and the fact that it seemingly had never had a commercial release?

No less an expert than the late Patrick Lundborg, one of the world’s leading experts on psychedelic culture and music and author of “The Acid Archives”, the ultimate guide to underground sounds from the 1960s and 1970s, called The Constant Sound demo disc “one of the Holy Grails of 1960’s sunshine pop and lyte psych,” comparable to the California sunshine style on the very rare Birmingham Sunday record, and added: “This is bound to blow the mind of any genre fan, as it delivers on all the key areas and has no obvious weaknesses.” High praise from the psychedelic guru!