The Google Glass Sound Search Feature
The Sound Search feature makes it easy for you to ask who’s singing that song. A good use of Glass is listening to music through the device’s speaker — much easier than digging up your smartphone and headphones and then putting your smartphone back where you found it. But with Sound Search, you can do more than just listen to music.
While you’re listening to a song that’s playing over the speakers at your favorite coffee shop, you can find out the name of that song and the artist in one of two ways:
Slowly tap the touchpad twice until the Google Search screen appears; then swipe forward on the touchpad.
Say “OK Glass, Google what song is this?”
Whichever method you use, Glass listens to the song and then displays the details. Now you can rest easy at night.