Ok, so this is one of my favorite pieces of music in all of recorded history.
"Dido's Lament," from Henry Purcell's opera Dido and Aeneas (1685-ish or so). It has spawned other covers (which are also great) and is just a badass piece of music on its own. It uses musical techniques that were 50 years ahead of its time, which is kind of like being the 17th century equivalent of "Pop Musik." The song is originally sung by a woman who (in fine opera tradition) commits suicide after being betrayed (or double-betrayed, depending on interpretation), but is presented here as (I assume) an allegory for Humanity's betrayal of Mother Earth. Lennox's voice is perfect for giving these 330 year-old words the kind of pathos they deserve.
I've really been enjoying doing Sudoku along with Cracking the Cryptic, and this puzzle both nerdy and has an exceptionally beautiful solve. It's by no means a beginner's puzzle (took me nearly 2 hours, though I am not a fast solver), but it's not so hard that you can't easily follow along and understand each step.