As I just noted in another response, I immediately heard the OP as an overly earnest and depression-prone robot a century out from human contact letting go, to the best of her very limited ability. I thought it was brilliant.
ETA: The more I think sbout it, there are two notable things about that OP - the song was both down tempo and off-key, and a number of her dance moves actually required a partner.
How awesome would it be if, by the end of the season, the song was sweet and light and she had a partner?
Madoka.