I've cobbled together this thing that fetches song lyrics from lyrics.wikia.com. It works well with my work-flow, so I thought maybe some of you might like it, too. =w=
You need "lynx" installed to run wyrics itself, and the "gendl" script needs to be either in your CWD, or in your $PATH. You need "mpv" to run the "mp" helper-script.