When you woke up this morning, you promised yourself "I won't get into any more needlessly dangerous and convoluted surveys today." And guess what? Now, through some series of events that you can't fully comprehend yourself, and that the narrator doesn't feel like explaining to you, that's exactly what happened.
There's a man behind you, pressing a gun against the back of your head. He demands that you... sing for him? Alright? Trying to remain calm, you ask him what he wants you to sing. He doesn't care, he says, as long as you sing it perfectly. If you mess up one word, one note, one rest... you die. You must sing from start to finish, and no short, cop-out songs like nursery rhymes. You have to impress him with something real.
The man growls impatiently. It's clear you'll have no time to practice. You have to start singing now. Which song do you sing in order to try and survive?