NEW YORK - If baby yoga seems so yesterday and Twinkle, Twinkle, Little Star so last century, then the latest craze among New York parents is for you: Baby DJ School.
DJ, composer and playwright Natalie Elizabeth Weiss offers an eight-week programme to teach babies hip-hop, music mixing and air guitar.
And her clients? Professional families in Brooklyn, New York - one of the most competitive cities in the world where wealthy parents are notorious for lavishing cash and attention on their progeny's early development.
"Parents love it. They freak out. They all want to bring their friends. It's growing so quickly," Ms Weiss told AFP.
With songs such as That's Why Daddy Loves Disco and modern DJ equipment, she teaches tots under-three years old electro, hip-hop and house; how to spin vinyls, match beats and create funky samples.
"Baby DJ, put your hands up, put your hands up, up," raps Ms Weiss at the start of the lesson as five toddlers sit or stumble around in a vintage clothes and vinyl shop in Brooklyn.
Some smile and look excited. Their parents push their children's arms up and down in time to the beat.
"Baby DJ, you got to get up if you wanna get down," croons Ms Weiss.
She believes nursery rhymes, such as Twinkle, Twinkle, Little Star and Baa, Baa, Black Sheep, are not challenging enough.
Instead, she teaches the infants rhythm and gives them the chance to mix songs.
"They're like geniuses. Just because they can't say what they're learning doesn't mean they aren't," she said.