When your favorite artist has their comeback, the thrill of watching all their performances that come throughout the week is just amazing! Though it is the same song, comeback performances seem to have a different flavor each time, don't you agree? With a spectacular performance on yesterday's Music Core, 2PM returned once again with "I'll Be Back" on this week's Inkigayo. Check it out below. Due to Music Bank not airing this week, the group will have another comeback stage next Friday.