It can cost $40,000 to rent Carnegie Hall for the night. What drives up costs? Partly it’s the stagehands’ union. For example, “in the fiscal years ending June 30, 2001, 2002 and 2003, Carnegie stagehand and properties manager Dennis O’Connell made between $309,000 and $344,000 annually, second only to former executive and artistic directors Franz Xaver Ohnesorg and the late Robert Harth. That’s more than some principal players in major symphony orchestras. Three stagehand colleagues came in third, fourth and fifth, earning more than, say, Carnegie’s senior staff or director of development.”