Here's what the panel had to say about some of the acts:
Melissa Villasenor: The celebrity impressionist and comedian earns laughs with her interpretations of Barbara Walters, Miley Cyrus, Kathy Griffin, Christina Aguilera and Natalie Portman. Sharon says that she won't be working in retail much longer while Piers calls it a "sensational audition". Howie loves that she "showed [them] everything", including "great comedy". He calls her a star and thinks that everyone will love her.
The A+C Twins: The brothers fail to impress with their version of 'My Girl' and Piers gives them an 'X' almost immediately while the audience boos. Piers later says that it was a "brilliant act" before they started singing and incorporated their "weird dancing". Howie also says no and Sharon tells them that they "can't sing". The boys then call Howie a "hater" and challenge him to come on stage and he agrees, performing the track again with them.
Zuma Zuma: The acrobatic group from Mombasa, Kenya grabs the approval of the judges and audience alike with a high-energy routine which incorporates tumbling, jump rope tricks and pyramid building. Howie loves that they have "so much energy" and are "so edgy" while Piers is impressed that they perform without protective mats. Sharon is likewise pleased and also gives them her vote to move on to Vegas.
Mauricio Herrera: The 33-year-old showman, who is already famous in his native Costa Rica, performs a high-energy rendition of Ricky Martin's 'Livin La Vida Loca' which Piers buzzes 'no' to right away. The audience response is mixed at first but quickly turns to boos. Piers admits that it was "horrendous" and calls it "disco nonsense". Howie thinks it was "silly" but ultimately amusing while Sharon is less impressed but also gives him a pass to see what he will come up with next.
PopLyfe: The teenage band who met as music students perform a popular version of Travie McCoy's 'Billionaire' and are given a standing ovation for their efforts. Howie calls it "original and unique" and thinks they are "wonderful". Sharon admires their humble approach and both she and Piers praise the lead singer's "real talent". However, Piers says that she doesn't need the group to be a star.
The Paper Horn Man The 56-year-old entertainer, who describes himself as a "one-man band" because of his use of paper cups and "horns", amuses the audience but not Piers, who buzzes 'no' immediately after the routine begins and then walks off. However, he later returns and gives his 'no' vote. Sharon calls him a "great character" but ultimately doesn't believe he's made for the live shows. Howie is "inspired" and thinks that it has potential to grow.
Other acts who succeeded in making it through to Vegas included acrobatic couple The Daring Jones Duo, 8-year-old swing singer Sadie and The Elektrolytes, a hip-hop dance group.
Renaissance opera singers Liz Plummer and Robert Close were less successful and were sent home empty-handed along with drag troupe The Rice Rockettes and 69-year-old dance instructor Anita McCoy who performed several hula hoop and baton tricks.
America's Got Talent continues Tuesday on NBC.
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