Brand new idol group MR.MR has unveiled their debut track, "Who's That Girl"!

"Who's That Girl" is the work of the American producing team Brian Kierulf and Joshua Michael Schwartz, who have also produced for artists like�Lady Gaga and Britney Spears.

MR.MR (Mister Mister) signifies that the members are "men among men". The five manly members�Jin, Changjae, Tei, Doyeon, and�Ryu, are reported to have an average height of 181 cm (~5'11?).

Check out their unique debut stage below!