Kelly Clarkson dominates 'Idol' airplay

Kelly Clarkson rocks the American Idol airplay chart, with three of the top four tracks. Stronger (What Doesn't Kill You) remains atop USA TODAY's AC airplay chart (and at No. 8 Hot AC), while Mr. Know It All sits at No. 21 on Country. New single Dark Side continues to climb both the Hot AC (No. 19) and Top 40 (No. 34) charts.

Also on the format charts this week: Carrie Underwood (AC, Hot AC for...