Regardless of which carol you choose, each of them will come with corresponding music and lyrics. All you need to do then is to press play, and sing along to “O Christmas Tree” without having to suffer the embarrassment of forgetting any of the lyrics. Just in case you are in a situation where it is extremely noisy and you are unable to hear the sound from your device’s speakers, just follow the red bouncing ball that follows the words, and you’re good to go, although we have received reports that it does lag at times on the way to the beginning of the next line. What other kinds of Easter Eggs from Google is the most memorable one for you?