An ultra-wide angle lens will take in the big picture at a larger venue. In this shot, I slightly overexposed the center/front-most singer to bring out more light in the balance of the picture. In this venue, an f/2.8 or wider lens would be a better choice for stopping the performer's motion.
Camera and Lens Settings
20mm f/3.5 1/125s ISO 3200 5184 x 3456px