'Idol' track sales: Clarkson, Underwood

Kelly Clarkson's Dark Side is the best-selling track from an American Idol act this week. Sales of Carrie Underwood's new single, Blown Away, are starting to kick in, too: Its weekly sales jumped 54% this week, according to Nielsen SoundScan. Aside from Kelly and Carrie, only Phillip Phillips has a track among SoundScan's best-sellers, as Home has 24,000 downloads.

Sales figures for several key Idol tracks follow:

Kelly Clarkson, Dark Side (41,000, +12%, 195,000)
Kelly Clarkson, Stronger (What Doesn't Kill You) (30,000, -11%, 3.59 million)
Carrie Underwood, Blown Away (26,000, +54%, 263,000)
Phillip Phillips, Home (24,000, -21%, 577,000)
Carrie Underwood, Good Girl (22,000, -15%, 1.233 million)
Kelly Clarkson, Mr. Know It All (7,000, -13%, 1.57 million)
Carrie Underwood, Before He Cheats (8,000, -5%, 3.534 million)
Brad Paisley/Carrie Underwood, Remind Me (7,000, -14%, 1.599 million)
Jason Aldean/Kelly Clarkson, Don't You Wanna Stay (6,000, +6%, 1.123 million)
Mandisa, Good Morning (5,000, -8%, 154,000)
Carrie Underwood, How Great Thou Art (2,000, -6%, 348,000)
Mandisa, Stronger (1,000, -1%, 197,000)