This is a simple mod that gets the lyrics of the current song to appear in-game...
In case you want to sing-along while playing, cause I know I do.

You can optionally install Mod Utils to individually turn specific song lyrics on or off, but the mod will work fine without it.

All the lyrics in this mod are taken from the wiki. If you think that they're incorrect, that's not my fault.
I believe that I got to every song in the game with the exception of mall. The lyrics for that song aren't in the wiki, and even when trying to decypher them myself, there's so many overlapping garbled vocals that I cannot understand a word for most of it. I'll be happy to add it if someone manages to figure them out though.