The two-part finale of hit series “American Idol," which begins tonight, is the most talked-about thing in television right now, partly because this season's contenders, Adam Lambert and Kris Allen, are exciting performers. But it's also because they have done something unexpected: Their unlikely friendship has presented America with a new vision of itself, beyond the deepest divisions of the culture wars.

Lambert is a rocker from the liberal urban Southland with roots in musical theater and the Hollywood club scene. Allen is a collegiate evangelical Christian from Arkansas. Lambert has been compared to Queen's Freddie Mercury and Elvis Presley; Allen recalls John Mayer and the Jonas Brothers.

At a time when change is in the air but the old conflicts over religion, lifestyle and sexuality aren't going away, this eighth season of “American Idol" is vividly illustrating how people with cultural differences can make beautiful music together.

Lambert was this season's first major sensation, and remains its biggest star. “I've been an 'Idol' fan since Season 5, and as far as I can tell he's the strongest musical talent who's ever been in the competition," said Alex Ross, music critic for the New Yorker. “Beyond the flair and style he's a very technically secure, accurate singer who is especially good at getting the words across -- diction and such -- and finding different colors for different songs."

Lambert's dazzling tenor and propensity for high notes have made for many memorable “Idol" moments. But in this era of Internet leaks, what's become known about his life beyond the show has made an equally important impression.

That the “Idol" finale has come down to these seeming polar opposites who share so much is particularly notable, given the seemingly constant presence of sexual politics in the news. The California Supreme Court might soon confirm or overturn the state's voter-mandated ban on gay marriage. Miss California USA Carrie Prejean made waves by stating her personal opposition to same-sex unions when she was questioned at a pageant.

The friendship between the two finalists suggests that tolerance can trump ideology, a powerful sentiment that echoes President Obama's suggestion that bridging differences could be more effective than trying to eradicate them.

“This is part of the spirit and ethos of an America after Obama. His whole rhetoric fits into the desires of our political culture after such a divisive period. And that's also playing itself out on 'Idol,' “ said Tongson.

Each singer has fans who should be rooting for the other one, according to the usual patterns linked to the culture wars. Some commentators have tried to make a stir over Lambert's sexuality -- Bill O'Reilly questioned Lambert's appropriateness as a singing role model on his Fox News program. But he seems to have many Christian admirers.