I don't wish to give away the plot in case some of you haven't yet seen this wonderful movie. So let's just say that as the story unfolds, teenage Anna and her sister Elsa have spent many years inside their castle without much of a social life. A person who has a personality preference for Extraversion (usually but less correctly called an Extravert) is energized by his or her outer environment which includes things, action, and especially people. When such a person is deprived of companionship, he or she will soon be running on empty like a car without gas, and seeking human contact as if it were the only gas station in a huge desert. I believe that's what this song is about as Anna looks forward to all the activity which will be taking place at their castle as her sister is crowned queen.
From the very first line we see Anna's focus on her outer environment.
The window is open, so's that door
sets the stage for Anna's curiosity about and eagerness to see what lies beyond the castle's walls.
Why have a ballroom with no balls?
Finally they're opening up the gates.
There'll be actual real live people
It'll be totally strange
But wow, am I so ready for this change?
'Cause for the first time in forever
There'll be music, there'll be light
For the first time in forever
I'll be dancing through the night.
Anna is clearly energized by the prospect of interacting with things found outside of herself and her usual drab surroundings, things such as music, light, and most importantly, people. Years of living in isolation have left her starved for social contact.
'Cause for the first time in forever
I won't be alone
I can't wait to meet everyone!
Anna then imagines that the Coronation Ball holds the possibility of bringing her romance, which she imagines as an entire evening of laughing and talking. While people who prefer Introversion also enjoy laughing and talking (and, of course, romance), an entire evening filled with laughter and talk would probably sound exhausting to them, and maybe even scary! To Extraverted Anna it sounds like a dream come true.
I'm getting what I'm dreaming of
A chance to change my lonely world
I believe the movie Frozen also depicts Introversion in the older sister, Elsa. We must keep in mind that much of her behavior takes place under extreme stress, dictated by a need to keep her distance from others in order to protect them. So her true personality preference is not as clear to us as Anna's. Would she have chosen a life of complete isolation if it were not necessary? Probably not, but I do believe her true preference is for Introversion, because keeping to herself seems to energize her. Elsa seems to be focused on and to draw her energy from her inner world. She does not seem excited on her coronation day, even though she has probably grown up knowing she is destined to rule her parents' kingdom one day. In contrast to Anna, on her coronation morning she is singing
Don't let them in, don't let them see...
Conceal, don't feel, don't let them know
While Anna's personality is open and easy to read as is typical of those who prefer Extraversion, Elsa's personality contains much that is hidden.
Her song "Let it Go" illustrates the saying "Still waters run deep", which is a good description of those who prefer Introversion, since there is much going on inside the Introverted person which is hidden from the world.
The snow glows white on the mountain tonight
Not a footprint to be seen
A kingdom of isolation,
And it looks like I'm the Queen.
The wind is howling like this swirling storm inside
Couldn't keep it in, heaven knows I tried
Don't let them in, don't let them see...
Conceal, don't feel, don't let them know
While Anna's song shows her looking forward to being with others, Elsa's shows her looking forward to being alone. Her song is about that moment when she can no longer hide who she really is or worry about what others will think of her. She seems relieved and at peace to have a kingdom of isolation where she can be herself, something which would not at all have met the needs of her Extraverted younger sister.
I am one with the wind and sky...
You'll never see me cry
I see in Elsa's transformation a lesson in an important aspect of psychological type theory called type dynamics, which states that when a person takes the Myers - Briggs Type Indicator(R) tool, his or her personality is much more than the sum of the resulting four letters. To make a long explanation short, the dominant, leading part of an Introverted personality is hidden, while an auxiliary or helping part is shown to the world. (In contrast, the dominant part of an Extraverted personality is shown to the world.) I believe that Elsa has accidentally revealed to her world the hidden, most important part of her personality.
I don't care
What they're going to say
Let the storm rage on,
The cold never bothered me anyway
Meanwhile, for Extraverted Anna
For the first time in forever
There'll be magic, there'll be fun
For the first time in forever
I could be noticed by someone
While Elsa's soul seems to be nourished by introspection, Anna's thrives on action. I suspect that even though she lives in a kingdom of ice and snow and stars in a movie by that name, this Extravert isn't quite so Frozen after all!