I was so sure they'd sing Libera. Then the intro came and I went to "That is definitely NOT Libera." And after they hummed the first line, I, along with the audience just went crazy.
"I'm drowning here, and you're describing the water!" - Melvin Udall
My aunt, who was kind enough to accompany me, was waiting for the encore when she saw the song list and when the Libera boys started arranging themselves on stage for their encore performance, she was so sure it was going to be "Air."