Lakou Mizik will perform in the on the Jazz & Heritage Stage on Saturday, April 30, at 4:20 p.m.

There’s a bit of a fuss going on as Steeve Valcourt, founder of the Haitian all-star band Lakou Mizik, is holding a WhatsApp conversation. 

“Okay, I got you,” he says, pausing from the call to address the fuss-maker, his four-year-old son. He turns back to the call to ex...