'New York' said Dumbledore 'May I ask your reasoning behind this?' as always, his exterior showed no signs of emotion, but inside he was screaming. Ten days in New York with a group of students who cared nothing for the rules. It would be a miracle if none of them were kidnapped. 'You all need some fresh air and a change of scenery, especially after recent events, and I think that the choir trip poses a perfect opportunity' 'New York does not have fresh air, and it would not be too good if the students, having survived the last battle then got killed by mugs in one of the most violent cities in the world' Snape's usual sneer was firmly in place. 'Oh don't worry about it; I've got it all organised. I was just telling you so that you could prepare the choir; there are going to be four concerts: two secular, and two ' 'Well now that you've told me you surely don't need me here any more, so by your leave I will return to my chambers to research some music' the sneer was more prominent than ever. 'Yes Serverus, you may leave' and good luck

Snape had started running the choir in Harry's sixth year, as means of a distraction from things happening outside the castle. While he didn't mind taking the twice-weekly practises, he had no intention of taking them on a trip halfway across the world, just to sing a few concerts. But Albus had requested it, and he would always get what he wanted in the end one way or another, so he might as well go along with it.