YouTube Music has now released real-time lyrics when listening to music, a feature that has been seen on both Spotify and Apple Music for quite a while.
Previously, YouTube Music could only show static lyrics, but now users will be able to enjoy real-time lyrics that follow along the songs played on YouTube Music.
Some users have seen it first hand with a new update that shows highlighted lines when a certain line is sung whilst the lyrics increase in text size and are highlighted in white.
Probably enabled by Bard. But still no effort to turn HiRes audio.