Nashville, TN -- Tim McGraw's biggest fan: Faith Hill. Tim McGraw's biggest critic: Faith Hill. He says they'll bounce ideas off each other but they don't always take each other's advice. He says sometimes he might love two or three of her songs and they won't make the record, or she'll hate some of his songs and they will make it. McGraw says he might not agree with her, but he always goes back to evaluate if Hill doesn't like something. He says they listen to each other more than anyone else.