Go Crazy! is the fourth Korean studio album (seventh overall) by South Korean boy band 2PM. The album was released in both physical and digital format on September 15, 2014 by JYP Entertainment.

During the filming for the music of the groups upcoming comeback a fire broke out on the set of the music video, authorities stated after the fire had been handled that the fire was relatively small and had been controlled by the time the fire team arrived, and apparently started when a spark from some fireworks which were being used in the music video landed on a sponge. All the members and staff present at the time were confirmed to be unharmed. The comeback that was to be in April was postponed by JYP Entertainment and 2PM due to their individual activities. A JYP Entertainment rep told Newsen on the 14th that "2PM's comeback has been delayed for the time being. It will be in the latter-half of this year but the exact date has not been decided yet." [NEWSEN]

On August 28, Taecyeon, through his personal Twitter, released a photo of Nichkhun and Wooyoung. This was followed by Jun. K who released a photo of Taecyeon and Chansung on his Twitter. Next Wooyoung released a photo of Jun.K and Junho. These three photos hinted that their comeback was near. Next, insiders revealed that their comeback would be on September 15.

On September 1 (KST), JYP officially released all three teaser photos (that was released by 2PM's Taecyeon, Jun.K and Wooyoung earlier) and one group photo for 2PM's comeback as well as the date for their comeback, September 10. On September 3, six more teaser photos was released (individual members' photos) ahead of their comeback.

On September 5, a teaser video was uploaded on JYP's YouTube channel. A party version teaser (2nd teaser video) was released on September 7.

The full track list for the normal edition and grand edition was released the next day. It is revealed that the normal edition consists of 11 tracks including two Korean versions of their Japanese singles, "Beautiful" and "I'm Your Man" which will be released online on September 15, at 0000 (KST). The grand edition will be released on September 29, 12pm (KST) with seven additional tracks, including three remixes of the title track "Go Crazy!".

...
Wikipedia