'Idol' airplay: Clarkson, Underwood, etc.

Kelly Clarkson's Stronger (What Doesn't Kill You) remains the most popular song on this week's American Idol airplay chart, and it's still a top 10 hit on USA TODAY's AC, Hot AC and Top 40 charts.

Just below that record, Carrie Underwood's Good Girl, already a top-10 Country hit, continues to climb the Hot AC chart. And Kelly's Mr. Know It All is climbing the country chart.

Haley Reinhart and Kris...