Yep I heard about the allergies too. I thought it was an amazing tour! It is definitely my favorite. I don't even remember her voice sounding strained at all, but then again I haven't watched the concert in a while. But it seems after the concert, her singing wasn't the same. It would really benefit her if she had professional singing lessons so she learns not to harm her voice. She also has a habit of singing while sick, which is really not good. She was sick for a good portion during the promotion of Heart Station as well, but she kept on singing.