Every morning, I walk through an underpass on the way to work.

On some days, I encounter a busker with the most amazing voice. Seriously. He’s not like one of those hipster live music bands who sound like they’re half asleep in the middle of their acoustic pop cover. This guy sings at the top of his lungs and strums his guitar like crazy. You can feel his energy at 8.20 in the morning before you even enter the underpass.

I look forward to listening to him all the time, even if it’s just for the 40 seconds when I’m walking through the underpass. He’s oblivious to the world around him. He closes his eyes, rocks back and forth, and sings soulfully and passionately.

Here’s what’s interesting: I noticed that it’s pretty easy for him to score a donation. 80% of the times that I’ve seen him, he’s gotten ...