In which Dr Hyde contributes

Ok, I was kind of obsessed by the song-graph meme. I spent the rest of the day humming more candidate songs for graphical representation. Then I told Dr Hyde of my plans to create another song-graph, and he scoffed, "That's not going to make a good graph." I challenged him to improve upon it. He did. Forthwith, Dr Hyde's song-graph:

"We attempted to separate the two individuals using common geological features that are commonly encountered in situ. To our surprise we found no mountains, valleys, or rivers sufficiently high, low, or wide enough, respectively, to effect a permanent separation (data not shown). These data were supported by the lack of effectiveness of low to mid-height hills (10 - 100 m), an irrigation ditch, and a small, but fast-moving, creek."