Under the Electric Sky (2014)Movies

In its infancy, live techno — or, as it’s been rebranded, electronic dance music — was an elusive creature, tracked down through flyers and phone lines.

Like most of the counterculture, it’s been commodified and mainstreamed; today, an annual gathering celebrating EDM is North America’s biggest music festival.

The 3-D documentary “Under the Electric Sky” follows six interwoven plot lines at the three-day Electric Daisy Carnival in Las Vegas, a neon extravaganza with an all-star DJ lineup.

The most touching story is that of Sadie, a quirky Texas teen who’s found her niche in this community of costumed, blissed-out misfits — a...