Click the green flag...and um...don't question it. Stick around for the end; don't scroll down until the audio's over because the below instructions cue another surprise that will sound awful if put over top of the normal audio. and whatever you do...don't click the background. I repeat - do not....As in do - Definitely do. Press it now!!
It might be fun to press the 1 or 2 keys... Just for giggles. No reason...