This is because in the latest update to the app, Google has enabled lyrics for YouTube Music. If you use YouTube Music, you can access the lyrics by tapping the information icon on the left of a song name. This panel is also where it shows the view and like count, but it will also now show a lyrics section.
However, it should be noted that not all videos will have lyrics, and if they don’t, Google will note it as such. We’re not sure what percentage of songs will not have lyrics, but we imagine that for the most part, the more popular songs should be covered, which should help save users time from having to try and find the lyrics themselves manually.
Also, YouTube Music’s lyrics feature isn’t new as plenty of other streaming apps such as Apple Music and Spotify offer up lyrics as well, but it’s good to see that YouTube Music is now catching up to the competition in terms of features. Google had also recently announced that YouTube Premium and Music are now home to 20 million paying subscribers.