BigBang's latest number 1 song performed with 2NE1, a "female BigBang" group produced by GDragon, is called Lollipop. This song was used for a commercial they did for a cell phone (Lollipop= name of phone). There is a 2NE1 thread already on JF- go there to read more (here:
http://www.japanforum.com/forum/japa...-big-bang.html ). Here is the music video:
YouTube - Big Bang feat. 2NE1 - Lollipop MV (english subbed)
GDragon has also recently been featured in a song by the Japanese band w-inds. And here is the music video:
YouTube - Rain is Fallin' - W-inds ft. G.Dragon