I wanted to animate the tutorial from the get-go, but didn't have any ideas of how to make it entertaining. I had a different idea and the audio already recorded (basic spoken instructions with some bad jokes thrown in) but I hated it. Anywho, on the way home from work, nothing was on the radio, so I started playing with the "I am T-pain" app on my iphone, picked the "bartender" track and improvised the audio in this Flash. After that I just did some [very] limited animation with the screenshots I had for the text version of the tutorial that got scrapped.
tl;dr version: I freestyled the song in the car and drew pictures to it.