PHOENIX - An outdoor rock concert in the middle of the Valley heat might not sound like the best way to spend an afternoon, but 113-degree temperatures didn't stop didn't a massive crowd at the Vans Warped Tour Thursday.

It did, however, slow some people down, as medics treated two dozen concert-goers for heat-related illness. Another dozen people were treated to various other reasons, but as the saying goes, the show must go on.

"You just have to be prepared. You guys have a very hot summer in Phoenix and you can't shut down everything because of it," said Warped Tour founder Kevin Lyman.

Lyman and his staff have been putting on the event every summer for 23 years. The tour is no stranger to the Phoenix summer sun, giving organizers plenty of experience keeping people cool.

"This is weather that I've never experienced in my entire life," Laila Kahn said before taking the stage with her band Sonic Boom Six. The rock group hails from Manchester, England. "Let's just hope the heat isn't the end of Sonic Boom Six."

Organizers pushed back the start time by a few hours to allow some bands to play after dark. Sonic Boom Six was one of those lucky bands.

That was good news for the group learning to cope with something new, and when asked what she thought when first walking outside, Kahn said, "I probably can't say it on air..."