Korean and English MV for Lets Go by Group of 20, a project group featuring 20 young K-pop idols. The song is released in conjunction with the G20 Summit – a global leader conference which is going to be held in Seoul next month.
The artists are Jonghyun (SHINee), Gyuri (KARA), Seohyun (SNSD), Junsu (2PM), Changmin (2AM), Jaekyung (Rainbow), Sungmin (Super Junior), Kahi (After School), Luna (fx), Jieun (Secret), Junhyung (B2ST), Gayoon (4minute), Min (miss A), G.O (MBLAQ), Bumkey (2wins), G.NA, Son Dam-bi, Seo In-guk, IU and Anna.
[Update] Check out the English version as well; identical MV with English lyrics.
Decent song. Most of the participating pop groups show courtesy by sending their best vocalists, thus we are seeing some of the best young Korean idols here.