The crowd had moved closer to the stage as Scott, who runs the festival, performed on opening night.
Houston Fire Chief Samuel Pena said hundreds more were injured and the show was canceled shortly after the crash.
Mr Pena said when the crowd started to move forward it “caused some panic and started causing injuries,” NBC News reported.
He said people “started to fall, to pass out, and it created further panic.”
Houston Police Chief Lt Larry Satterwhite was near the front lines when the tragedy unfolded.
“It seems like it happened in a matter of minutes – all of a sudden we had several people on the ground going through some type of cardiac arrest or some type of medical episode,” he said. declared.
“We immediately started doing CPR. “
Fire and rescue services took 17 people to nearby hospitals, 11 of them with cardiac arrest, CBS News affiliate KHOU 11 News Houston said.
A crowd of 50,000 turned out for the two-day festival.
The second day is now canceled.