Dance music wasn’t always this popular. In fact, the sights and sounds we now associate with the genre were once considered taboo. They were the emblems of a counterculture forced to blossom not out in the open, but in the safe confines of arcane nightclubs and warehouse raves. So how did electronic music break through the glass ceiling? Before the songs of Above & Beyond, Roger Sanchez, Armin van Buuren, and other legendary producers rattled the world’s biggest festival stages, they were auditory ugly ducklings on a quest to reach their full potential. The music always had the potential to fly, but without the help of the gutsy independent record labels willing to back it, its wings would forever remain clipped. And after all these years, those indies have proven...