"He's probably only got a few weeks, if that," Urban told the daily. 'I've just been dealing with that the last couple of days. This has all come at a very strange time where it's typical of a career that has extreme highs and extreme lows, all often at the exact same time. So (the exhibit) is bittersweet a little bit because (my dad) is the catalyst for all of this. My dad is the catalyst for me living in America."