Final Four perform on 'Idol'

The remaining four singers — Blake Lewis, LaKisha Jones, Melinda Doolittle and Jordin Sparks — will the take the stage on a "boogie"-themed round of "American Idol" tonight.

Barry Gibb, best known for his role in the pop group the Bee Gees, is this week's celebrity mentor.

As usual, check the "American Idol" blog at www.ledger-enquirer.com for live updates throughout the show.

Tonight's episode starts at 8/7c on FOX.