From a very young age, future K-pop idols have to follow a harsh training regime. This group is preparing for a crucial audition in front of record label executives.

The hothouse academies offering kids a shot at K-pop stardom

Updated 0221 GMT (1021 HKT) October 6, 2018

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Seoul, South Korea (CNN)The teenagers drop down on their stomachs, slap the floor with their hands and rise with a gracious twirl. They then proceed to flap their arms like a flock of birds to the beat of a K-pop song.

There are at least 50 of them, crowded into a low-ceilinged room with mirrors on three walls. It is hot, it is sweaty and it is 9.30 p.m. on a Wednesday night.
The group, who have been practicing the same move repeatedly for nearly two hours straight, are all students of Def Dance, an elite dancing and singing school in Seoul's upscale Gangnam neighborhood.
"I spend about three hours here every day after school," says Lee Jae-Gi, a skinny 16-year-old wearing a gray sweatshirt. I started taking classes when I was 11."
Lee Jae-Gi, 16 years old, participates in a dance class at Def Dance.
He studies K-pop, hip-hop and singing. "Practicing the same move over and over again can be tiring but I am progressing and that is all I care about," he adds.
The teenagers enrolled in Def Dance are all single-mindedly pursuing the same aim: to become a K-pop idol. Becoming one of the chosen few guarantees fame, success and a bank balance that sets them up for life.
    But the school, which charges $200 per month and has 1,400 students, some as young as eight, is only the first rung on the ladder to fame.
    To