Optical Biocomputer
“Want to listen to something really different? Smear yoghurt on your favourite CD. Slide the disc into the player. Crank up the volume. And hear that music in a completely fresh, possibly spine-chilling way.

Subtler sounds could be achieved using fungal or bacterial growth, rather than scraping or coating the disc’s surface. This is because these life forms introduce tiny errors, on a micron on nanoscale level rather than the far bigger millimetric scale. In addition, fungus and bacteria can shape the sound in weird ways. Bacteria grow by cell division, while fungi grow by branching.”

Listen to yoghurt and fractal music.