Is defending champ Sandeul able to win for the third time on 'Duet Song Festival'?

Who won on the May 20 installment ofMBC's 'Duet Song Festival'?  Today's episode featured the return of a previous winner,B1A4'sSandeul, who had been unable to make last week's recording because of his schedule - but he's back now!

Last week's duo that was voted as the pair audience most wanted to see again wasChangminandJun Gun Howho performedLee Sun Hee's "Meet Him Among Them" for 404 points.  After that wasSon Seung YeonandJo Ye In's performance of2NE1's "Ugly" which earned them the first spot with 411 points!  

The current first place pair then choseLee Suk HoonandLee So Rito go next.  The two did a beautiful and powerful rendition ofJang Hye Jin's "To Me," earning them the first spot with 427 points!  Lee So Ri was touched to tears.

Then wereVIXX'sKenandChoi Sang Yeop, the duo that won last week while reigning duo was absent due to Sandeul's schedule.  The two performedKim Gun Mo's "Seoul's Moon," but were unable to take first place.  They had to take second due to a 3-point difference.  The two shed tears as they relayed their gratitude for each other.

Next wasJung Inand Ahn Byung Min performingGirls' Generation's "Party."  They got 420 points, unable to take the first place spot.  Following was B1A4's Sandeul andJo Sun Youngwho won two weeks ago!  They performedJeon Ram Hee's "Memory's Etude," and succeeded in defending their crown with 429 points!  This makes it their third win.  As for the duo audience wanted to see again, Lee Suk Hoon's team was chosen.