This is, indeed, a great question. The problem is not trying to come up with one, it's trying to pick one of many! :lol:
One does stand out though. One day in the Magic Kingdom we encountered a group of Korean school children. A large group all dressed in identical blue jackets. We ran into this group several times and each time, as we passed them, we could hear them singing as they walked. Beautiful young voices singing in unison. . .always a Disney song. So sweet. That same evening, we left the park after Wishes and headed to the Resort Monorail to travel to the TTC. As we waited on the platform we could hear singing coming up the stairs from the platform across the tracks from where we stood. It was the Korean group, and as they neared the monorail platform we could hear that the song they were singing this time was "God Bless America". The monorail crowd, usually quite loud, fell into a collective silence as we all listened. When the song ended, the entire platform burst into applauses. The children were obviously pleased that their performance was so well received and, as one of the listeners, I can tell you I felt so fortunate to be in that place at that time. Magical!