On the March 23 broadcast, GOT7 joined as the guest. As always, the guests had to find out which of the mysterious singers are the ones with the real talent. 

SEE ALSO: GOT7 dominates iTunes charts with long-awaited album 'WINTER HEPTAGON'

After long discussion and contemplation, GOT7 chose the mysterious singers, Shim Kyu Hyuk and Lee Dong Hoon, as their final choice. The two singers were then given the name of GOT2. 

To find out about the identities of the mysterious singers, GOT7 first started the performance for ''If You Do'', which GOT2 soon joined. 

It turned out that the GOT2 were indeed talented singers! Lee Dong Hoon, a 25-year-old aspired singer, made jaws drop with his amazing vocals. Shim Kyu Hyuk, who revealed to be a former backup dancer for BTS, also shocked the viewers with his outstanding skills.

Also, GOT7 is the first guest ever that correctly picked out the talented singers on season 4. 

Check out the jaw-dropping moment with GOT7 and GOT2 above!