Irish dancers Prodijig and duo Tayluer and Elliot were branded "phenomenal" and "mind blowing" by judges Adam Garcia, Kimberly Wyatt and Ashley Banjo after their live performances.
Wyatt told Prodijig: "Wow, you can do it all. You dance like champions. It's just brilliant!"
Garcia added: "In your audition I said you were mind blowing. Tonight, I was so trying to pick something apart from your performance. You know what, I can't. There can be no argument. Amazing."
Banjo told Tayluer and Elliot: "For 8 and 10 years old, you take a song that's so emotionally past your years and you make it your own, you own it. As dancers, you just get it. Phenomenal."
Garcia commented on the young pair of friends from Liverpool: "You've just proved how difficult the semi-final is because you tick every box. I just need to emphasise that what you do in your dance technically, most teenagers can't do it yet. I think you're going to be really difficult to beat."
Project G, Sam Hall, Bendy Kate and Chuck were knocked out of the Davina McCall-hosted dance reality show.
The finalists will perform in front of 6,000 people at London's Olympia on March 4.
Got to Dance continues on Sunday nights at 6pm on Sky1.
> 'Got to Dance' judge Ashley Banjo wanted for Olympics ceremony
> 'Got to Dance' Top 30 revealed