On March 30, rappers San E and Mad Clown suddenly showed up in Hongdae, a university town known for its street singers and hip-hop lovers. 

Around 3 PM (KST), the two rappers jumped into the streets to sing their 2016 collaboration track "Sour Grapes", as well as their latest single "Butterfly". Even though this busking session was not promoted at all beforehand, crowds of audiences quickly formed around the area. 

With so many fans surrounding them, San E and Mad Clown successfully performed their other hit singles like "Love Is A Dog From Hell" (by Mad Clown) and "Body Language" (by San E). In the case of "Butterfly", the two were surprised to find out that the crowd already knew the lyrics to the song, even though the track had only been released a day ago.

Congratulations on their successful surprise busking!