I love her to death. I went to her concert in Frankfurt on March 4 and it was the best concert I've ever seen, and I've seen many. Expensive as hell (I travelled from Prague) but definitely worth the money.
I wanted to go to Alicia Keys as well but then decided not to do it afterall and now I'm seriously biting myself in the ass. Especially considering that her ticket prices of 65 € were quite cheap for today's standards. I was interested in going to Celine Dion on the 20th of June but then saw her ticket prices and my interest flew out the window. You have to pay at least 130€ for a decent ticket in the nosebleed section and at least 160€ for a ticket in the lower bowl. The highest price category is 250€. The woman is insane.