The tragedy, which killed 242 people and left 636 injured, began on the stage, where the Banda Gurizada Fandangueira was performing, and soon spread, causing a lot of toxic smoke.
On Saturday, Cristiane dos Santos Clavé, who was at the establishment and lost 15 friends that night, testified.
Tragedy, which mainly killed young people, marked the city of Santa Maria, known as a university center in Rio Grande do Sul, and shook the entire country.
Jury, which starts today, will be broadcast live on the TJRS YouTube channel. A fire in Santa Maria (RS) in 2013 killed 242 people, mostly young people.
The nightclub, in the center of Porto Alegre, received hundreds of young people for a celebration. The house was packed, with about 1,000 people. A fire killed 240 people.