This is the PV of the song A Guy Who I Know by Lady Collection.
this is the link to the song:
http://www.imeem.com/groups/2tF-jia9/music/FDPA_LtY/lady-collection-a-guy-who-i-know-aneun-oppa/
Album: Lady Collection
Release date is October 8, 2009
Members :
Ji Eun (지은) - former YG Family solo singer
Say (세이)
Eli (앨리)