American Idol fifth-season runner-up Katharine McPhee had a genuine shot at Billboard's peak position, with her eponymous debut album hitting record-store shelves last week.

But ultimately, McPhee couldn't quite contend with Norah Jones.

The singer/songwriter's third studio LP, Not Too Late, ran away with the title belt, opening at #1 with more than 405,000 sales, according to the latest SoundScan figures.

McPhee's LP finished a distant second on Billboard's albums sales chart, selling close to 116,000 units - a respectable total, but not nearly enough to top the chart this time around.

Interestingly enough, Daughtry - the self-titled debut from fellow Idol finalist Chris Daughtry's rock collective — follows McPhee at #3, with 77,000 scans.

Meanwhile Taylor Hicks, the self-titled debut from the man who surpassed them both for the American Idol title last year, slips further out of the chart's top 50. That disc finished this week at #76 after selling just 12,000 copies during its eighth week of release.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.