Google Assistant's ultimate goal is to be a full service software system that can effectively answer virtually any question and conduct any internet-related task, and the new song identifier that has been built into the program is a step in that direction. Much like the popular standalone app Shazam, Google Assistant's song identifier can accurately pick out songs from ambient sound.
Though the core functionality is much the same as Shazam, one of the key differences is that Google Assistant's song identifier can be activated through voice commands. By asking "What song is this?" or a similar phrase, Google Assistant will automatically bring up the song's title and artist as well as some lyrics and links to the song on YouTube and Google Play Music.