冰雪奇緣主題曲是《Let It Go》。
The snow glows white on the mountain tonight，Not a foot print 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've tried.Don't let them in don't let them see，Be the good girl you always have to be.
Conceal,don't feel don't let them know，Well now they know.Let it go let it go，Can't hold it back any more.Let it go let it go，Turn away and slam the door.I don't care what they're going to say，Let the storm rage on.
The cold never bothered me anyway，It's funny how some distance makes everything seem small.And the fears that once controlled me can't get to me at all，It's time to see what I can do.To test the limits and break through，No right no wrong no rules for me。I'm free，Let it go let it go.
I am one with the wind and sky，Let it go let it go.You'll never see me cry，Here I stand and here I'll stay.Let the storm rage on，My power flurries through the air into the ground.My soul is spiraling in frozen fractals all around，And one thought crystallizes like an icy blast.
I'm never going back the past is in the past，Let it go let it go.And I'll rise like the break of dawn，Let it go let it go.That perfect girl is gone，Here I stand in the light of day.Let the storm rage on，The cold never bothered me anyway.
《Let It Go》歌曲賞析：
整部動畫影片從歌曲開始，發生著重大的轉折變化，艾莎從這段音樂中釋放自己，變成了內心強大的女王。飽含委屈與無奈的艾莎蹣跚在風雪中，內心的糾結掙紮、苦悶煩惱在音符轉換中不斷宣泄。伴隨著弦樂豐滿的織體和打擊樂的全部進入，嶄新的艾莎誕生了。
旋律上行，伴隨著充滿激情與張力的歌聲，她為自己加冕。《Let It Go》這首歌曲也成為了音樂描摹人物心理活動的經典案例。音樂與現代的電影科技相碰撞，賦予電影振奮人心的力量，畫龍點睛。