Clazziquai's Alex and f(x)'s Luna came together for a special duet on MBC's Lunar New Year special, "Idol Star 7080 Best Singer." Thirteen idol teams participated in a competition that would crown a king or queen, based on who gave the best cover of songs from the '70s and '80s. Although they had only a short window for rehearsal, Alex and Luna delivered a lovely performance of Lee Moonse's "Breakup Story." Indeed, they managed to earn the jealousy of every member on set! The duet has increased the buzz surrounding the two, as they were already known for choosing each other for their 'ideal halves' on various variety shows. Clazziquai's Horan added to the excitement by commenting, "Alex has a charm that makes any woman fall in love." Check out their performance through MBC at 7:10 PM KST on February 4th. Source + Photos: BNT News Tip: bblina200