The song "Grown-Up Christmas List" by Peter Hollens is an emotional plea for a better world. The singer reminisces about writing letters to Santa as a child and dreaming of presents under the tree. However, as an adult, he realizes that material possessions cannot heal the wounds of a broken world. Instead, he sings of his wish for peace, unity, and love. He longs for an end to war and a world where nobody suffers heartbreak or loneliness. He believes that if we all work together, we can make this dream a reality. The song is a reminder that in the hustle and bustle of the holiday season, it's important to remember the deeper meaning of Christmas – to be kind, compassionate and loving towards one another. It calls on us all to be a little more selfless, and to strive to make the world a more peaceful and loving place. Overall, "Grown-Up Christmas List" is a beautiful, moving song that reminds us to never lose hope for a better world, and to keep dreaming and striving towards a more harmonious future.