It probably depends on where you live who is filling the amphitheaters. In Texas, sure, lots of pop-country stars are cleaning up in the stadium game. On the east coast, r&b, Latin music and the poppier realm of hip-hop fill the stages.
Never listened to Norah knowingly, though I'm sure I've heard her. She's supposedly a very nice lady. Friends in Austin have known her and had nothing but good things to say. I don't listen to pop music so can't judge.
What's wrong with Phil Woods?