Paras Griffin/Getty People should feel safe at concerts ... B singer jumped off stage mid-performance to confront a man following a fight between him and a woman in the crowd.

Sonu Nigam revealed that he paused his DTU concert mid-way to address crowd safety after a vape was thrown on stage.

A concertgoer who was crushed in the crowd wonders ... I got 'em stage divin' out the nosebleeds." "I was like, 'I'm going to die because this man is not stopping the concert,'" Lira recalls.