On the June 9 broadcast of SBS's 'Fantastic Family - DNA Singer', a contestant who revealed that his older brother was a "New York Times Singer" appeared and demonstrated his emotional vocals!

On this day, the contestant sang Lee Seung Chul's "Don't Say It's Goodbye", stating that his brother practiced the song countless times during his trainee days. 

After watching the contestant's performance, the panelists suspected that his older brother was a K-Pop idol, and named idol groups like Super Junior and EXO. 

In the end, the contestant's older brother was revealed to be Super Junior's Yesung! After joining his younger brother on stage, Yesung greeted viewers in a dandy purple suit that accentuated his idol-like aura, although his white ankle socks received criticism(?) from the panelists for being too "dad-like". 

Finally, Yesung and his younger brother performed a duet of Yesung's hit OST "It Has To Be You". Check out the duet stage for yourself, below!