Remember those flat round things you may have found lying around the house. Those that never really worked well as flying saucers? Well, the other day I happenned to have a good look at one through a magnifying glass. I was able to discern something waveform'esqe in the shape of the grooves. I thought, "groovy, there must be a way to extract something sensible off of that" (actual thought quoted). At which point I came up with some great excuses ^H^H^H^H reasons to have a go:

A) These round objects could have some archeological value.
B) I could waste some time.

Happily convinced by these, I tried to recall an old legend I once heard concerning these objects. This legend being of technological nature, entaled a diamond needle that would vibrate when placed atop the revolving flat things, these vibrations, when amplified would produce music.

...

Thus, to supply the virtual gramophone at least one complete revolution of the record, four regions had to be separately scanned. These were later stitched together to form an image of several complete inner tracks of the record.

Digital Needle - A Virtual Gramophone