You don’t come to a festival like Lollapalooza for the purest musical experience. For that you’re better off spending the dough on intimate club gigs to which only fan club members have access.

No, you come to them for the completely random, ecstatic moments that occur when thousands of people are gathered together to listen to more music in one day than their brains can possibly process. And when the artists onstage are fully aware of that, they do their best to Entertain with a capital E.

The winner of Friday’s most random, ecstatic moment, and everyone within a 100-yard radius of her would agree, was the girl who decided that the best seat in the house for Radiohead was atop the speaker stand, about half a mile from the stage. Those things are built like ladders, and when the “security guards” (20-year-old, very hesitant girls) turned their heads, our heroine shimmied up, and within seconds was grooving in her own little world, seemingly oblivious to anyone’s cheers or pleas for her to get down.

A guy soon followed up the speaker parallel to hers, but he didn’t quite capture her spirit. I have to say, though part of me was scared I’d see her tumble to her death, I was jealous. Sure, we were all way too far back to really see the band — and Radiohead chose to use the video screens for more abstract images of their performance, so they don’t really give us the impression we’re right there — but she was completely free from distraction and able to engross herself entirely in the music.

She couldn’t hear the many voices of fellow festival-goers, who no longer had the attention span to be in the moment and instead were having full-on conversations about real estate and politics in the middle of the set. (All that chatter was the reason I was so far back: Closer to the stage, the voices were louder than the music; but in front of the speaker they were nearly drowned out.)

Her many copycats were called down from their perches shortly after their ascent. But it wasn’t until halfway through the first encore that the security girls finally got a big dude with work boots and a headset to climb all the way up to the queen of the speakers and bring her down. He was laughing the whole time, as he put his arm around her and escorted her, I presume, off the premises. She didn’t seem to mind, either. She had her moment up there in the sky, with her favorite band, the fireworks, and even if she didn’t know it, the admiration of hundreds of new fans.

(Check out MTV News’ coverage of day one at Lollapalooza with photos and video here.)

You R Here user Sabrinaladeeda is at Lollapalooza. Are you? Send us photos of yourself, the bands, the scene, and we’ll put the best stuff right here on the blog or even on MTV! Get registered now at YouRHere.MTV.com.