The performance, a tribute to lost loved ones, was largely unadorned, with only a heartbeat rhythm and a ‘drone’ to accompany the singer. ‘That was why I was so nervous before going out. The dress rehearsal was in front of maybe 16,000 people — and that went awfully. So people could catch the Tube home, they told them to start leaving the stadium when my part was playing! And I’d walked up there, in the dress and the heels, and the mic didn’t work. Everyone was shouting, and I was getting so distracted, I forgot the whole arrangement… So that was in my head: if this happens on the night… Then, at the ceremony, right before they opened the door, I felt like I’d forgotten the whole tune. But it came back at the right moment,’ she smiles.