The 'goodbye' song when contestants are dismissed

Anybody know the name of this song? They play it every episode in the background with the the contestant has to leave, so the others can go on to the next round. Its in the background while the chief is talking about what they get as a prize. Some of the lyrics go like this"

"Hey don't you know, its time to go, tally ho"

Is this a rockapella song?




"How can we get to it, if its in the air? The corp issued me a rifle, not wings."