Amazing! I was looking for this to see lyrics on YouTube Music. Please add support to Amazon Music too. They only support lyrics to pop music. A lot of lyrics are missing in their service.

Great addon. Tested on YouTube Music & Spotify.

Very nice with Youtube Music. Thank you a lot!!!

Issue 1: with the extension on, when I click a button on YouTube main site, to change video resolution, notifications bell, etc., popup menus automatically hide in random time about between 0.5 and 2 seconds, making it tricky to use those popups. A workaround is to turn off extension when I use youtube.

Issue 2: doesn't seem to work on any other site than music.youtube.com site

Amazing extension! This is what I was looking for! Really deserve more recognition. Add auto scrolling and highlighting the part of lyrics being sung features would make this extension perfect.

Update:
Quick bug fix and now it works perfectly, just as intended. Lovely extension. Dedicated dev.

Original Issue:
Doesn't work for me at all. Not on music.youtube.com or youtube.com or open.spotify.com.
Maybe I'm doing something wrong but certainly doesn't seem so. Please fix it or suggest what to do to get this up and running.

SO, shortly after I made my original review of this addon, the developer replied to it saying that the problem had been fixed - and lo and behold, it had! Great addon, guys!

No issues until now.