C.A.G.E. is a fictional documentary about 'Variations on a Plain Index' a 1945 sound work by an unnamed experimental composer. C.A.G.E. is a subtle and philosophical story about an artist's relationship to environment and how component elements of an artwork can represent subjective states of mind. C.A.G.E. is a psychological or physical cage, it is the notes C, A, G and E which make up the final noise, it is the names of the mine shafts in Death Valley where the final recording is made. C.A.G.E. is the final resting place of the sound work, an unmanned electrical substation somewhere near Las Vegas.