Pop music's ultimate Top-10

By Randy Lewis, Los Angeles Times Staff Writer

As the traditional record business continues to unravel, musicians who are trying to keep lucrative careers alive don't seem to be worrying about whether the glass is half full or half empty. Instead, they're finding as many glasses as possible and putting a little something in each.

So, this year, for the 11th edition of Calendar's annual Ultimate Top 10, which previously has combined performers' North American concert tour revenue as measured by Pollstar with U.S. album sales as tallied by Nielsen SoundScan, we're also including money generated from sales of digital tracks through iTunes and other online vendors to give a fuller picture of which pop acts generated the most money during 2007.