Are there any Vocaloid songs that remind you of Severus Snape?

I want to add some new Vocaloid songs to my iPod, so I'm wondering which ones remind you of Severus Snape. Please add links to the songs (on YouTube or NND), the title of the songs, and which Vocaloid the song is by. I will listen to all songs you answer the question with, and some I might even already have on iPod! :)