"The morning before a show I get nervous. I can wake up with a really bad sick feeling. I have to hit very high notes and if you hit them wrong you can put your throat out. So there's a, 'Will I? Won't I?' aspect to it. It used to worry me sick. That sense of, how could I meet the levels of expectation."
The song Heartland is about a trip Bono and Adam made after the Joshua Tree tour through America by car, they passed many placed and states and Heartland contains phrases of Bono's journey of that trip.