In broadcasting, probably the biggest anxieties are caused by deadlines. If a broadcast is scheduled for a certain time, your audience will not tolerate any kind of excuse that it was not ready in time. Your production/program/project needs to be completed properly by airtime no matter what. Live broadcasts of music performances, especially techncially complex remote broadasts (which I do several times a year) can be particuarly challenging. But if pulled off well, can also be exhilarating.