Replying...
Intro. You are a foreigner who has recently arrived in Arendelle. You are walking under the North Arendelle Mountains on your way to town and suddenly you heard a beautiful song for the first time from a woman. But the atmosphere turned from summer to winter very quickly and you didn't know what was happening. While listening to the song Libre Soy, it is the same thing you feel enduring a difficult life. You were curious to follow that voice in the mountain, when you are close to it. See Elsa using her ice powers building her ice castle and her iconic ice blue outfit. You couldn't believe what was happening, you were afraid but also curious. After she finished the song and her transformation you decided to meet her.

Elsa

@Edward Javier