There is a huge difference between a pop-concert and a festival though....
Mostly pop-concerts only last for a few hours, not 4 days and only have 1/2 specific artists which organize the concert. And you also don't have the side-animation, drinks, bars, shops, food, camping, etc... etc... And festivals are almost always outdoors, while pop-concerts are very often indoors.
visit the website and look for the images, you'll know what I mean
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