Rascal Flatts has frequented the Post-Gazette Pavilion nearly every year since the band's formation in 2000. The songs stay the same, save for a new hit or two. The band's look, also the same. Yet, bafflingly, the group manages to show up every year with a completely different and better show than last year.

The group brought its American Living Unstoppable Tour to Burgettstown, and proved why its latest album is titled "Unstoppable." While its music, at times, can seem formulaic (semi-slow love songs dominate the repertoire), last night it proved just how much variety it has -- with songs ranging from breakup songs, to love ballads, to inspirational songs, summer anthems, and even Marvin Gaye's "Let's Get It On."

From the moment lead singer Gary LeVox's incredibly powerful high-range voice blasted through the speakers, the near-capacity crowd was on its feet and dancing. Band members Joe Don Rooney and Jay DeMarcus appeared alongside LeVox amidst a high-tech stage with video screens that were placed everywhere from the floor to the ceiling.

The fans, too, proved that they are also unstoppable. Heavy rains that passed through the area in the afternoon didn't slow anyone down. From the opening "Summer Nights" to the encore "Life is a Highway" the crowd sang along to every word.

Midway through Rascal Flatts' set, after dancing and screaming along to "Me and My Gang," the crowd was rewarded with a repeat of the song. This time with a twist.

"You guys want to be on TV?" LeVox asked the crowd.

The band rolled right into the song again, television cameras that had been set up near the stage came to life, and cheerleaders wearing the uniform of each Big Ten school ran out on stage (with Penn State's cheerleader up front, of course). The band proceeded to film a commercial for the Big Ten that will air prior to this season's football games.

Shortly after the commercial shoot, LeVox took a break, and DeMarcus and Rooney showed off their talents. Rooney took fans to his front porch as he sang "Mayberry." And, after a grand piano was lowered from the ceiling, DeMarcus played and sang the humorous "Backwards."

LeVox returned for the band's first hit single "Prayin' for Daylight." And the band never slowed down until it sunk behind the stage after "Bob That Head."

The fans were left screaming for more, and they got what they wanted.

The three musicians appeared back on top of the video screens as they sang their version of the Beatles' "Revolution." And to the crowd's delight, opening act Darius Rucker returned to the stage and Rascal Flatts joined him in the Hootie & the Blowfish classic "Hold My Hand." Rucker and LeVox closed out the show with "Life is a Highway" as the fans screamed every word.

Cletus T. Judd had the easy job of getting everyone pumped up for this star-studded show as he kicked things off with his hilarious country parodies and free T-shirts. And Rascal Flatts held serve with yet another Pittsburgh show that left the fans more than satisfied.

The night could have been considered complete before Rascal Flatts even took the stage. Rucker took the crowd on a wild ride with songs from his country album, such as "Don't Think I Don't Think About it," songs from his days with Hootie & the Blowfish and a unique version of "Purple Rain."

Rucker thanked the crowd several times for welcoming him into country music, because artists who try to cross over are sometimes met with hostility. But the Pittsburgh crowd was more than welcoming, especially when his raspy voice led a sing-a-long of Hank Williams Jr.'s "Family Tradition."

The roar that Rucker received after his set was deafening, but somehow the crowd managed to be even louder for the headliners.