out of the thousands who auditioned, kidz bop chose cammi, egan, riley for these coveted roles. >> thist first. but i love the team, i love who i work with. >> reporter: launching in the u.s. in 2001, kidz bop is a throwback for many fans. >> today's biggest songs made just for kids, newly recorded from the kidz bop kids. >> reporter: from chrissy teigen to kerry washington to jenna fischer, fangirling over kidz bop hits. >> i remember hearing about kidz bop when i was really little. >> i was super in awe about the sets, the costumes, i thought it was super cool. and i was like, oh my gosh, i could be that someday. >> i see myself still continuing to be a performer, because i eventually want to be my own solo artist and tour around the u.s. >> reporter: for some of these tweens chasing big dreams, big breaks come next. from zendaya to becky g. for artists like cammy, egan, laila, and dominic, the road to performing in front of large crowds starts here. how many people are they going to be performing in front of each night? >> anywhere between 10,000 and 15,000. >> wow. >> reporter: all