Google search results continue to get smarter and smarter. Now, the world's most popular search engine will display song lyrics right on the search results page courtesy of its ever-expanding Knowledge Graph.

All one needs to do is search for a song title plus the word "lyrics" to get results. While much more convenient for searchers, not everyone is happy with Google's new trick.

Those that run song lyric websites like azlyrics.com, songlyrics.com and others that rank highly in Google's search results can no doubt expect to see their traffic decrease moving forward. But the real question is, why is Google even bothering with song lyrics in the first place?

Truth be told, Google is only displaying a snippet (albeit a sizable snippet) of song lyrics in search results. If a user wants to see the full song lyrics, they are urged to click through to Google Play. Basically what's going on here is that Google is promoting its own content above third-party sites.

It appears that Google had been beta testing the new feature for the past few months. Yet without a press release from Google, it's unclear exactly when it went live to everyone. Most, however, believe the rollout took place within the last few days.

It's worth pointing out that not every song under the sun will turn up in-search lyrics, suggesting that Google is only working with a small-ish lyrics database instead of scraping content from top lyric sites.