Question

Is it possible to make playable audio records from recylced PET material (old plastic bags, drink bottles, etc)?

Answer 1

Yes it is very much possible. The playable audio records are available in many forms including:

Compact Cassette Tape

Open Reel Magnetic Tape

Analog Disc (Vinyl records)

and many more.

These audio records are made up of different types of plastics and polymers like Polyester and PET which are sometimes given magnetic properties to store music/acoustic notes.

The recycled plastics can be treated to form malleable plastic sheets which can then be imparted magnetic properties using additives, to store audio.