Vader's mood had not improved as the week had progressed and tomorrow he would have to face a bunch of his idiot students' idiot parents.
And he was trying very hard not to remember his last Parents' Weekend in Fandom. Those memories brought up feelings that were a lot like regret.
So he was sitting in his room brooding sulking meditating.
As you do when you're an anti-social, evil, Sith Lord.
[OOC: Radio squirrels--as far as you can tell, Vader is raging nonsensically at absolutely nothing. Oh, this'll do wonders for his reputation...]
Enter Lord Vader (Track 11) -
John Williams