Hip hop star Mad Clown and SISTAR member Soyoo have been receiving much attention for their duet song.

On September 23, it was revealed that their song was still number 1 on music sites.

This song was first released on September 10 and has been on a winning streak for 2 weeks.

The song, "Stupid in Love" was produced by Kim Do Hoon and is about a nice girl's pain after a break up and a 'bad boy' who is about to break up with someone.

The two create a great harmony of vocals and rap and have received a positive response from fans.