Twelve semi-finalists made up of singers, acrobats and variety 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 the acts that will be performing, with videos provided by clicking on their names.

American Military Spouses Choir:

This show choir touched the judges with their emotional tribute to their husbands serving in the military in the quarterfinals. Singing Hero by Mariah Carey, the group was able to advance from America's votes alone.

Anna Christine:

Though her quarterfinals performance of Don't Let Me Be Misunderstood by Nina Simone wasn't perfect, the judges voted to advance Christine anyway. The soulful young singer will likely perform another classic song for her semifinals performance.

Branden James:

This opera singer also touched the judges with his stirring rendition of You Raise Me Up by Josh Groban in his quarterfinals performance. He was able to advance from America's votes and is the only opera act left in the competition aside from Forte, who advanced to the top 12 last week.

Chicago Boyz:

These expressive dancers performed a dancing/jump-roping act for their quarterfinals performance. Though they did not get through on America's vote, the judges saved them on the basis of wanting to see what they could do next.

D'Angelo & Amanda:

These young ballroom dancers tore up the stage in the quarterfinals with a passionate Paso Doble. The duo advanced on America's vote and was able to outlast Ruby & Jonas, their biggest competition who performed on the same night.

Illusionist Leon Etienne & Romy Low:

Though magicians Etienne and Low were eliminated in the quarterfinals, judge Howard Stern elected to bring them back as his wildcard pick. He said that he wanted to see another magician act in the semifinals.

Jimmy Rose:

With a passionate fanbase, Rose sailed through to the semifinals on America's vote. The country singer may not have had his best performance in the quarterfinals performing Heaven by Bryan Adams, but he was able to advance based on his story and his heart.

John Wing:

This veteran comedian performed a standup routine in the quarterfinals in which he criticized modern-day teachers and children. He appealed to the judges' tastes as they voted him to go through to the semifinals.

Kenichi Ebina:

This dancer/mime is judge Howie Mandel's favorite act in the whole competition. In the quarterfinals, Ebina advanced to the semifinals on America's vote after he performed a routine in which he acted like he was in a video game.

KriStef Brothers:

This comedic, acrobatic duo had to sit out last week when one of them got injured. America voted them through after their quarterfinals performance, balancing on each other while wearing cheesy '80s costumes.

Marty Brown:

The judges heavily criticized Brown's singing of You're Still the One by Shania Twain in the quarterfinals. Regardless, the country singer's fanbase voted him through to the semifinals because of his earnestness.

Timber Brown:

Performing on a spherical apparatus, Brown took his acrobatic act to another level in the quarterfinals. The energetic acrobat was able to advance to the semifinals on America's vote.

Six acts will advance to the top 12 on Wednesday night's results show. America's Got Talent will air the live show Tuesday at 9 p.m. on NBC.

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Americas Got Talent