Korean idol group SECRET made an appearance on�the August 13th episode of�CDTV to perform their Japanese debut single, "Madonna".

Before the performance, the four members of SECRET briefly introduced themselves and the song. Leader Hyosung described "Madonna"�as a "groovy and an aggressive song".

Check it out their introduction and performance below!

http://www.youtube.com/watch?v=0-ltO93ycoU