Wow, ESFj? I'd suppose it's possible, I just don't think that she's anything but Fe.
Yeah I know, but I guess I'm more typing her songs than her as a person. Still, her singing seems a bit unusual for a Fi type.
If I were to create a chart of each temperaments' moods or perhaps their singing on a song over a period of time, then it would look something like this...
I'm not really sure about EJ, but I'd suppose it looks something like that. EJs moods change quickly, but it's more gradual and are likely to go through a straight path without stopping, rather than avoiding any obstacles like P types would. P types are constantly avoiding obstacles and changing their directions, so they are more erratic. Static types are overall more stable than Dynamic types. Dynamic types are more likely to create sharp contrasts in highs and lows. As you can also see IP types change their moods the most frequently in the shortest amount of time, while IJs are constant and almost never change etc.