Sorry, I don't have any specifics. The secret was revealed by a Columbia executive at a public radio music programmers' conference in about 1974. John Ross At 2/12/2006 08:40 PM, phillip holmes wrote: >I've never heard of this before. Wow. Do you know of any specific pressings? >Phillip >----- Original Message ----- From: "John Ross" > >>During that period, US Columbia discovered that they could >>substitute cellophane (or some other clear film) for vinyl. They >>were buying huge rolls of the stuff, without ever explaining to the >>supplier what it was being used for. I don' think it was the same >>stuff they used for shrink-wrap, but some other type of >>non-pertroleum-based film. >> >>They claimed it made no difference to the sound of the disks.