After a two-hour season finale that easily felt like it lasted three or four, 'America's Got Talent' (Wed., 8PM ET on NBC) crowned its Season 6 winner.

Would it be another solo singing act, which seems to have dominated the past several seasons, or would one of the unique dance groups rise to the top (sorry, POPLYFE, I've already ruled you out of contention)?

Before we found out, each of the final four acts got to perform a duet. Landau Eugene Murphy Jr. perhaps surprised the most by switching up the style of song completely with a more uptempo jam with Patti LaBelle.

This is it! After months of performances, it comes down to four final acts and a battle between dance and voice on 'America's Got Talent' (Tue., 9PM ET on NBC).

And yet, neither of the dance acts are what you'd expect. One, Team iLuminate, uses light-up costumes to create mind-blowing visuals on stage, while the other, the Silhouettes, creates illusions using shadow.

Both acts have blown us away in the past, but it was tough picking a favorite in this performance finale. Silhouettes went back to their more traditional shadow play, and created a rather wonderful story about a little girl going into a dreamscape. It was like watching Little Nemo in Slumberland play out on the stage before us.

The four acts competing for the $1 million prize in next week's 'America's Got Talent' finals are: Singer Landau Eugene Murphy, Jr., music band POPLYFE, and dance groups Silhouette and Team iLuminate.

A few weeks ago people were betting that singer Anna Graceman and dance team Miami All-Stars would have been shoo-ins for the finals, but poor choices they made on Tuesday's performance show led to either a strike or negative comments from the judges, which likely affected votes.

"The Miami All-Stars were still All-Stars, but they lost the 'Miami,'" offers judge Howie Mandel, referring to the group performing more like they were football cheerleaders in their last routine.

Mandel's fellow judge and nemesis Piers Morgan feels that America got it right in selecting the four finalists that they did. "These are the best four we've had," Morgan says. "I'm really pleased."

What should each act do to win next week? Give more of what they've already shown, or step outside the box and do things that they've never done before?