Just released my latest project, SongBranch. It's basically an interactive song lyric visualization app.
The edges are colorized as a heat map based on the word/phrase frequency. There are three different graph views: The default Normal view uses a custom algorithm to display a graph the song lyrics in the fewest nodes possible. The Simple view displays each song verse as an individual node, whereas the Detailed view is a graph of each individual word. You get interesting results from songs based on how the words are structured and repeated. Here are a few of my favorite findings:
Click here to launch it.