2PM held their first live stage for their new song "GO CRAZY".

On September 10, 2PM performed their 4th album title song for the first time through Naver Music's "GO CRAZY Pre-Party".

2PM opened up the pre-party with their past songs "Hot" and "10/10", coming back as a full group after a year and 5 months. Jun.K, who produced "GO CRAZY", said, "I'm so honored that this song became the title song. 'GO CRAZY' is a song that I thought of from long time ago and as the producer of it, I was half worried and half excited."

Nichkhun said, "Jun.K is like a grandpa in his daily life but when he's doing music, he becomes young and passionate. I found out his skills even more through this album." Chansung said, "Jun.K yelled, 'Energy!' from the beginning to the end of our recording."