You'd think Carrie Underwood didn't have a loving fiancé to go home to. She extended the Play On Tour that started in March not only through the whole summer but also through the end of this year. The massive fan demand shouldn't come as a surprise anymore since the former American Idol winner's Play On album has racked up the biggest first-week sales of any female recording artist and also got her the second-best week of sales for any country performer in 2009. Catch her soaring from one high note to the next on one of her twelve No. 1 singles on this trek.