Andy Berlin, Z Corp engineer extraordinary decided to push the limits of 3D printing by printing something unusual, in an attempt to inspire others to bend their imagination. He managed to convert a sound wave into a spiral ridge, with the sound wave corresponding to peaks and valleys in the shape. That's right - he printed an LP record!
Well, it isn't precisely an LP, as the fine detail format of a classic LP is beyond the (current) resolution of the Z Corp printer: 0.01mm. Nevertheless, as you can see from the images Andy successfully printed the "record". It plays too. And the sound? "Time To Get Ill" by the Beastie Boys.