Twelve quarter-finalists made up of singers, dancers and eccentric acts will perform live on America's Got Talent Tuesday night from Radio City Music Hall in New York City.

Here's a preview of 12 acts that will be performing, with videos provided by clicking on their names.

AeroSphere Aerial Balloon Show:

This acrobatic act is different from the usual pack of acrobats in that she uses a hot air balloon to suspend herself while showing off her skills. Judge Howard Stern said in her audition that they were looking for someone unique and she fit the bill.

The American Military Spouses Choir:

This group of military wives sang Ain't No Mountain High Enough in their audition and made the judges smile. Stern said they knew how to lift the human spirit.

Brandon & Savannah:

This brother-and-sister band performed an original song in their audition and a cover of Little Talks by Of Monsters and Men in the Vegas round. Judge Mel B said they "have a look, they're nice, they can sing," and Heidi Klum said they were the full package.

Chicago Boyz:

A creative acrobatic team, Chicago Boyz impressed the judges in their audition by incorporating human jump ropes and multiple back flips. The group was automatically selected to move on to the live show.

Dave "The Cobra Kid" Weathers:

Weathers charmed a rattlesnake in his audition and got it to pop a balloon in his mouth without injuring himself. "I know this is wrong but I want to see you again," Klum said after his audition.

Deanna DellaCioppa:

DellaCioppa sang And I Am Telling You I'm Not Going from Dreamgirls in her audition. Though she had sound problems in Vegas, she blew the judges away with a performance of I Won't Let Go by Rascal Flatts.

Illusionist Leon Etienne & Romy Low:

This pair of magicians showed their diversity from their audition to the Vegas round, doing a regular magic trick and a levitation performance. Stern said that he really wanted magic to be on the show this year.

Jim Meskimen:

This celebrity impressionist made the judges laugh with impressions of Robert De Niro, Robin Williams and Ricky Gervais. He automatically advanced to the live show on the basis of his audition.

Jonathan Allen:

A young opera singer, Allen sang a classic opera song, Time to Say Goodbye, in his audition. He then sang The First Time Ever I Saw Your Face by Roberta Flack in Vegas and convinced Klum and Mel B that he deserved a spot at the live show.

Kelsey & Bailey:

A dancing dog act, Kelsey performed with her dog Bailey and charmed the judges. Judge Howie Mandel noted that America was going to love their act and Mel B said it was "sweet and cute."

Kenichi Ebina:

An original dance act, Ebina stunned the judges with Matrix-style moves and prompted them to give him a standing ovation. Klum said that Ebina had a control over his body that was "unbelievable."

Mitsi Dancing School:

This troupe of dancers performed a Chinese folk dance in their audition. Klum said that they wowed her with their precision and their costumes.

Only four acts will advance to the semifinals: the three acts who get the most votes by America and one judges' choice. America's Got Talent will air the live show Tuesday at 9 p.m. on NBC.

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Americas Got Talent