HOUSTON—Screaming. Suffocating. Panicked. Unconscious. The concertgoers at a highly anticipated Houston music festival Friday night say they were shocked to witness how the event brewed into pandemonium that left at least eight people dead. Rapper Travis Scott was the headliner for the sold-out Astroworld Festival in NRG Park, which was attended by an estimated 50,000 people. Here, some of them describe the chaos they’re still trying to understand. Ariel and Shawn Little Ariel Little of New York was in the middle of the crowd in a prime viewing spot with her husband for only a brief minute before she started to struggle. It was in trying to escape the increasingly packed venue that the couple realized how dangerous it was becoming. Little’s voice quivered with emotion as she described how small she felt gasping for air as she was battered by the crowd. “My chest is in so much pain …