Bravo!
Explanations:
Picard says: "You played an F minor chord instead of a diminished D." to Nella which means that she screwed up because in Classical music you must play the notes as written but the way he says it makes it seem like it was a choice.
Picard refers to "The Inner Light" to the point of giving a fair description of the episode.
I think it's a remarkable guess based only on these two clues. One would think that you read my mind.
Your turn.
