LP, Analog, K7, micro K7, CD, DAT, MiniDisc, Each new audio media invention has searched to replace the previous as much in a qualitative idea as a consumerist idea. Each supports had their proper fabrication, wear and destruction sound on it, This produces a "tautological" sound object , within all its history inscribed on itself, and devoted itself to deteriorate. It is by publishing these media that realize a disappearance.