Walking down the street, in a shopping mall, or going through an airport terminal, we never know  who we're standing or sitting next to, say hello to; make your day a 'FEEL GOOD DAY."
On your search browser-"You Tube", or "Google", type:

"Little Girl gives Coin to Street Musician"-(Spain)
"Homeless Man Plays Piano"- (Sarasota, Florida)
There are others, ENJOY!!

Richard