An episode of 'Fantastic Duo' aired today!  You've been waiting for it!  Here are the duets.

For those who don't know, 'Fantastic Duo' only requires viewers to have a smartphone to sing a duet with the great artists. A duet version of each singers' hit songs are prepared, and viewers will be given the chance to sing with them. In addition, viewers can see fantastic duos be created within the legendary artists. 

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Taeyang enlisted the help of WINNER for a duet version of "Lower," Kyuhyun got veteran singer Lee Sun Hee for "Fate," and Lim Chang Jung got Red Velvet for "Open the Door"! You can see the performances or practice for this interesting means of doing duets down below from today.