Superfruit released a song with f(x) member Amber Liu.

Source: Superfruit’s Official Website

Superfruit is a singing and comedy duo that consists of Mitch Grassi and Scott Hoying. Both are members of the five-member acapella group Pentatonix. The duo recently came out with their first album Future Friends on Nov 10. F(x) member Amber Liu sang and rapped in the thirteenth track “Fantasy”.

Check out their music video here!