Since a lot of people are asking for lyrics, here's how you can get them. Although, not synchronised. That you'll have to do yourself.
1. I use this plugin for lyrics. You can use any other or just Google for the lyrics. But I use this one as it is light weight and just works.
2. Then I use this app to synchronise the lyrics with the song. You may also use https://lrcgenerator.com instead of having a separate app installed.
3. Then I use this tag editor to paste / embed the synchronised lyrics (output of step 2) as an ID3 tag with the song.
Result: