'Idol' track sales: Kelly Clarkson and more

Kelly Clarkson had last week's top-selling single from an American Idol act, but Idol also helped two other acts have big weeks last week. British boy-band The Wanted, which performed on Thursday's results show, saw a 23% increase in weekly sales of single Glad You Came, according to Nielsen SoundScan, nearly reaching 200,000 for the week. And judge Jennifer Lopez' Dance Again, which got a video premiere on the show, debuted with 118,000 downloads.

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Kelly's Stronger (What Doesn't Kill You) sold 137,000 for the week, pushing the single's release-to-date sales to 2.687 million.

The Wanted, Glad You Came (198,000, +23%, 1.649 million)
Kelly Clarkson, Stronger (What Doesn't Kill You) (137,000, 0 change, 2.687 million)
Jennifer Lopez feat. Pitbull, Dance Again (118,000, debut, 118,000)
Carrie Underwood, Good Girl (75,000, +14%, 573,000)
Jennifer Hudson & Ne-Yo feat. Rick Ross, Think Like a Man (12,000, -1%, 107,000)
Scotty McCreery, Water Tower Town (12,000, -19%, 49,000
Kelly Clarkson, Mr. Know It All (12,000, -8%, 1.423 million)
Scotty McCreery, The Trouble With Girls (11,000, -5%, 655,000)
Jason Aldean & Kel! ly Clark son, Don't You Wanna Stay (11,000, +16%, 2.021 million)
Lauren Alaina, Georgia Peaches (11,000, +7%, 140,000
Brad Paisley/Carrie Underwood, Remind Me (8,000, -5%, 1.495 million)
Casey James, Let's Don't Call It a Night (7,000, 0 change, 95,000)
Mandisa, Good Morning (3,000, -11%, 81,000)
Carrie Underwood, How Great Thou Art (2,000, +3%, 314,000)
Mandisa, Stronger (2,000, +1%, 176,000)