San Francisco electro artist Moldover, like Beck before him, figured out a way to make physical music purchases superior to digital: Embrace the physical. In Moldover's case, that meant cramming an actual working theremin into the CD case.

Moldover really went all-out with this one. The CD case theremin features a headphone jack as well as a speaker, and the wiring on the theremin itself spells out the artist name, track names, and "album art," such as it is. He even includes a tiny pocket-sized version of the theremin so you're never without that odd organic screechy sound. The album costs $50, which actually seems pretty cheap considering it's packaged inside a musical instrument. [Denver Westword]