The fire spread so fast inside the packed club that firefighters and ambulances could do little to stop it, Silva said.
Another survivor, Michele Pereira, told the Folha de S. Paulo newspaper that she was near the stage when members of the band lit some sort of flare that started the conflagration.
"The band that was onstage began to use flares and, suddenly, they stopped the show and pointed them upward," she said.
"At that point, the ceiling caught fire. It was really weak, but in a matter of seconds it spread."