The deceased has been identified as Aanchal Arora, police said.
The fashion designing student felt uneasy and then collapsed during the concert on Sunday evening. She died on the way to hospital, they said.
The doctors said that she died of cardiac arrest that could have been induced due to lack of oxygen.
She lived in Delhi's Pitampura area and was at the concert with her friends. One of her friends also fell unconscious during the concert, police added.
The police have lodged an FIR against the organiser and started its investigation.
The organiser has refused to comment on the issue.
