Alyce Santoro remembers those days too. And using the actual magnetic tape from old cassettes, mixed with equal parts colored thread, she creates Sonic Fabric. Along with Julio Cesar, she's created a Recycled Cassette Tape necktie. Since the tape itself is still magnetized, it actually emits audio when run under a tape-head. Granted, it's doubtful that you ever will. But you can hear the effect here.