Now, back to Clarkson's former three-week No. 1 "Stronger": the song holds at No. 2 on the Hot 100, while rising 2-1 on Radio Songs (117 million). A decade into her career, the 2002 "American Idol" champion scores her first No. 1 on the all-format-airplay-based Radio Songs ranking. Clarkson had previously peaked as high as No. 4 on Radio Songs with three singles in 2005: "Since U Been Gone," "Behind These Hazel Eyes" and "Because of You." ("Mr. Know It All," the previous and lead single from Clarkson's latest album, "Stronger," reached No. 14 on Radio Songs).