After teasing the feature last month, Google officially added a Play Music app for its Google Glass(s goog) device on Monday. The new software is available in the MyGlass application for an easy installation to Glass, or can be loaded directly on the wearable display. Google is also selling Glass-compatible ear-buds for stereo sound at a cost of $85. Once the software is installed, users can simply say “OK Glass, listen to…..” and name an artist or song, for example, to hear the requested music playback.

I haven’t installed the new app yet; I will just to test it out, but I don’t think I’d use it with Glass on a regular basis even though I do use Google Play Music. Why? I’m concerned about the impact it will have on battery life, as the power pack in Glass is relatively small; roughly 570 mAh.

Since Glass works…