10/10, it works also with the songs that do not have lyrics

Works well, easy to figure out
Note: On the "welcome" page it says that to modify the lyrics style, you can "right click on the lyrics button to open options," but I only could open the settings by opening Firefox's "Extensions" (puzzle piece logo, top right), then opening the options (gear logo), then clicking "manage extensions," then "options" (middle tab), so if anyone else can't find it, it's there (fortunately mantou132 has added a screenshot in the "welcome" page so it was easy to find) :)

Can we have the ability to freely scroll through the lyrics of the current song? Instead of being locked onto where in the song we are? Thanks :)

The window pops up only says "Error: NetworkError when attempting to reach source", haven't seen a single lyric yet despite having all permissions on and refreshing the page. Willing to share photos if possible

Works very well, however the PIP window is so small that I can only read the lyrics if i have my browser set to 200% zoom. How can i make the window bigger?

IT'S PERFECT, JUST PERFECT.

If you want to add lyrics you can just search the lyrics online, copy it and middle mouse button click on the mic option to paste in the lyrics and click on the mark line at the right time for the entire song and just save it. W add-on found it very fun to time the lyrics and watch it and edit it so that it fits well. Try it out fellas :D

Ty, bro. It works very well

Works perfectly, very helpful, thanks!

Awesome! Very useful. Zero problems.

Works great to show lyrics and I love that it can be picture in picture and allows you to add and sync lyrics that are missing or incorrect.
However seems like the right click to access settings does not work :(

nice

It worked most of the time. Some songs may still not have a lyric for them, but you can make your own by middle-clicking the lyrics button. You can also change the lyrics or timing on them manually. If you end up with the wrong lyrics for your song, you could click the extension and select other song's lyrics with a similar title.
Adding a lyrics manually has a very simple interface. You paste the lyrics and play the song, then hit a key when the next line pops up. You can tweak the lyrics or upload timed lyric files for simplicity too. Epic.

An amazing addon. Hope to see the pic-to-pic feature soon!

not working even after refreshing