After going for a serious and sexy concept last time, 2PM returned to their wild and upbeat roots with "GO CRAZY!" which is definitely a party anthem that will get you dancing the night away like the boys in the MV.

As mentioned previously, Jun.K took part in composing, writing, and arranging the title track "GO CRAZY!" from their 4th full-length album of the same title which will be released on the 15th. 2PM will also kick off their comeback stage on 'M! Countdown' on the 11th!

Go crazy, HOTTEST! 2PM is back!

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[Update] - The Japanese version of the song and PV have also been released, so check it out below.