JoJo had dance training until she was 10 years old. The girls on Dance Zmons had little to no training, they were filming most of the time and doing fake competitions. By the time she was 13, she had changed to singing. That is it, that’s her dance trsinging and she was a hip-hop and jazz dancer at that. Many other contestants had dance training as children. Lots as teens and many in early adulthood. But bsllroom is very different from jazz. A highly trained ballet dancer can normally transition into ballroom Very well Many of the pros at Dance with me America were ballet dancers to start with.