Polish sound postcards

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Even during the Communist days of the 1960s and 70s, Poles managed to get their hands on western pop music. A Donna Summer track, for example, would come in the form of a sound postcard (pictured), a small plastic rectangle covered in grooves, both literally and figuratively. We hear from Mat Schulz, a collector of Polish sound postcards. Download MP3

• Click here to view an audio slideshow featuring the postcards
• More information on the sound postcards