With the latest co-ed group ready to debut, it is sometimes mind boggling to think about the fact that there are very co-gender acts in K-Pop and in Korea in general. Here is a handful of the best collaborations, as well as some of the very few groups or project groups that have come together to meld both female and male voices.

Sunny Hill, Trouble Maker, T-ara and Supernova, Big Bang and 2NE1, Clazziquai, SoYou and Junggigo, Wonder Bang (Wonder Girls and Big Bang), Super Generation (Super Junior And Girls’ Generation), and more are featured on this list, so check it out.

Good to know: Several of the collaborations are in fact advertisements.

Sunny Hill – “The Grasshopper Song” (2012) The Grasshoppers

Big Bang & 2NE1 – “Lollipop” (2009)

Clazziquai – “Lover Boy” (2007) Love Child Of The Century

Super Junior & Girls’ Geneartion – “Seoul” (2009)

Song Ji Eun Feat. Bang Yongguk – “Going Crazy” (2011) Going Crazy

Koyote – “Return” (2010) Koyote Ugly

SoYou X JunggiGo feat. Lil Boy of Geeks – “Some” (2014) Some

Trouble Maker – “Now” (2013) Chemistry

Wonder Bang (Wonder Girls & Big Bang) MBC Year End Special Stage (2008)

Anyband (BoA,Tablo,Junsu, Jin Bora) –“Talk Play Love” & “Promise You” (2007) Samsung Anycall

IU Feat. Jang Yi Jeong – “Friday” (2013) Modern Times

T-ara & Supernova - "TTL (Time To Love)" (2009) Absolute First Album