All of the 22 following websites are auto-selected for the lyrics relationship type already and should probably be displayed in the sidebar too:

1. animationsong.com
2. decoda.com
3. directlyrics.com
4. gutenberg.org
5. hoick.jp
6. j-lyric.net
7. joysound.com
8. kashinavi.com
9. kasi-time.com
10. kget.jp
11. laboiteauxparoles.com
12. lyric.evesta.jp
13. lyricsnmusic.com
14. musixmatch.com
15. muzikum.eu
16. online-bijbel.nl
17. petitlyrics.com
18. runeberg.org
19. utamap.com
20. uta-net.com
21. utaten.com
22. wikisource.org