Street Piano

Universal: relating to or done by all people or things in the world. 

The power of the church choir, from a foreign and irrelevant perspective. 
The joy on the eyes of the audience, when performers have fun of what they're doing.
The spark in pupils, when the food is coming to the table.
Worries of hatred, terror and the curiosity. 

(Inference from day #2, Bad Ischl Choir Festival)