PSY, 2NE1, G-Dragon and Lee Hi Rock Crowd of 50,000

Last night was a big night for the YG family, as most acts under YG Entertainment come together to perform at PSY's "Happening Concert", which was streamed live on YouTube.

The concert saw performances from 2NE1, G-Dragon, and Lee Hi. 2NE1 performed the Korean version of "Can't Nobody" and "I Am the Best", G-Dragon performed "One of a Kind", and "monster rookie" Lee Hi sang with PSY for the song "What Would've Been".

But more importantly, PSY revealed his newest song, "Gentleman", which has already achieved an all-kill on various Korean music charts.

Check out some of the performances below!

Lee Hi and PSY "What Would've Been
[ytid=3IbjAUYCG7k][yttitle]Psy Happening LEE HI ft. PSY - What wouldve been_ HAPPENING HD seoul world cup stadium[/yttitle][ytcontent]PSY Concert "HAPPENING" Live Stream Starts on April 13th, 2013 at 6:30 PM (Korea Time) 싸이 콘서트 "해프닝" 라이브 생중계 SNSD少女時代 - Beep Beep Music...[/ytcontent]

2NE1 "I Am the Best"
[ytid=ECMiYv5L2yU][yttitle]2NE1 I'm The Best Psy's Happening Concert[/yttitle][ytcontent]2NE1 I'm The Best Psy's Happening Concert !!CL BOM MINZY DARA[/ytcontent]

2NE1 "Can't Nobody
[ytid=E9mOlMXPCPI][yttitle]2NE1 - Can't Nobody Psy happening concert[/yttitle][ytcontent]2NE1 - Can't Nobody Psy happening concert[/ytcontent]


G-Dragon "One of a Kind"
[ytid=Ajoz_7vI8yM][yttitle][HD] G-Dragon - One Of A Kind @HAPPENING[/yttitle][ytcontent][/ytcontent]

PSY "Gentleman"
[ytid=bQrbunVuka8][yttitle]PSY - GENTLEMAN (신사) [LIVE AT #HAPPENING CONCERT][/yttitle][ytcontent]PSY - GENTLEMAN (신사) - LIVE AT #HAPPENING▶ NOW available on iTunes: http://smarturl.it/PsyGentlemaniT▶ Official PSY Online Store US & International : http://psy.s...[/ytcontent]