Roh Ji Hoon and Eric Nam, who had fans hyped up with their hints on their collaboration, took to the stage on 'Birth of A Great Star 3' to become 'BROTHER19', or should we say 'BROTHAR19'.

The two former 'Birth of A Great Star' contestants and now budding solo artists each performed a bit of their debut songs "Heaven's Door" and "Punishment".

However, the real treat came when they joined forces to form 'BROTHER19' and performed what we've all been waiting for, their cover of SISTAR19's "Ma Boy", "Ma Girl"!

Roh Ji Hoon revealed the reason for his return stating, "I returned to the 'Birth of A Great Star' stage in two years for the special reason of hearing the critique of Brave Brothers who wrote the song." Eric Nam shared, "Congratulations. Since today is the 'Birth of A Great Star 3' finale, I will anticipate excellent stages."

Watch the performance complete with bodywaves below! (their segment starts around 32:08 mark)