To get lyrics, you need to decide if you want to use lyricwiki as a source. If not, there's the tunetext widget and pear lyrics widget/app. I think lyricwiki is better, and so my options (since the loss of lyricwiki API due to big media crackdown) are Get Lyrical and iClip Lyrics. Both can add lyrics automatically to current track or your whole library. GL is free but basic and adds an ad for itself and lyricwiki at the end of your lyrics (Lyric retrieved via blah blah). iClip has extra features and is 9 dollars.


Suggestions for iClip developer:
1) Lower the price to $5. Nobody pays for lyrics, so you'll need to over us a very good reason to.
2) iClip sometimes adds info from LW that isn't part of the lyrics (Find this song on amazon).
3) Tighter integration between iClip and LW. At least give me a link to the song page at LW so I can quickly edit the LW page. Being able to actually make changes to the song under my LW username within iClip would be incredible.
4) LW is constantly improving, but I don't want to have to run iClip on my library every several weeks. Keep a database in iClip of all the songs I've added lyrics to with a date for each song. iClip can compared current lyrics in itunes to the LW lyrics, and update if necessary.