The monumental ratings of "American Idol" may have declined ever so slightly this year. But sales numbers at Apple's iTunes store following the just-concluded season make clear that public demand for "Idol"-related recordings is strong.

In the week ended May 25, "American Idol" winner David Cook had 11 songs on the Billboard Hot 100 (see Happening Now, page 51) and 14 songs on the Hot Digital Songs tally, only one of which would have been available in prior years, and usually not until at least 10 days after the show finale.

But the chart numbers don't stop there. Runner-up David Archuleta had three songs on both the Hot 100 and Hot Digital Songs, giving the "Idol" franchise 17 songs on the former list and 14 on the latter. Overall, "American Idol" acts have 17 songs on the Hot 100, including tunes from Jordin Sparks, Carrie Underwood and Daughtry.

In March, a deal put together among Fox Broadcasting, Fox Interactive Media, "Idol" producer 19 Entertainment and FremantleMedia North America allowed iTunes to...

Click here for the full story including details of the partnership, how the parties ensured sales would not impact fan voting and more.