This seems like a natural integration move by the Glass team, one that makes effective use of the listening capabilities of the device as well as its potential interaction with the environment around it. Google will sell stereo headphones with Glass to completely integrate the user into the listening experience. It’ll function through the command “Play Music,” and will include a spotify-like mp3 service to stream the files for you on demand. It will be important to see what this means for both the music industry, as well as streaming services more broadly. Could this launch a new competitor to Spotify?