As America's Got Talent goes into the Vegas round, all four judges explained their thought processes in recent interviews about sending acts through to the next round as well as sending others home.

Judge Howie Mandel explained how they would be splitting the groups of this year in the Vegas round. He said that there were only 55 slots available for the live show, adding that they were splitting the groups into three categories: acts that will immediately advance to the live stage, acts to be sent home immediately and acts to perform a second time for the judges to fill a limited number of slots.

Fellow judge Howard Stern said that the Vegas round was the most important part of his job. Since he and his judges have to cut half the acts, he explained, "I'm looking for any little mistake, any little nuance that says to me they're too nervous for Radio City Music Hall."

Judge Mel B added that some acts they liked in the audition rounds aren't necessarily as good in the bigger scheme of things. Heidi Klum said that it was actually easier to narrow the acts down since they are able to see or hear them without the influence of a screaming audience.

As for last week's acts, many scenes from the July 9 and 10 episodes were uploaded to YouTube, and the clips that were most popular with the public were revealed.

Getting over 1.5 million views on YouTube, country singer Jimmy Rose became the most viewed act of the week by far. Rose sang an original song called Coal Keeps the Lights On and managed to outrank every other act that performed Tuesday or Wednesday of last week.

Coming in at a distant second was another country singer: 10-year-old Chloe Channell. Her performance of Carrie Underwood's All American Girl got over 310,000 views on YouTube. Yasha and Daniela, the two child ballroom dancers, came in third place this week with over 184,000 views.

Milton Patton, who sang the Brad Paisley-Allison Krauss song Whiskey Lullaby, got the fourth-most views this week with almost 180,000. He is the third country singer in this week's Top 5. Rounding out the Top 5 was eccentric act Tummy Talk, whose belly-slapping act was viewed over 166,000 times.

America's Got Talent will air the first part of the Vegas round on Tuesday at 9 p.m. on NBC. Watch the final audition round of America's Got Talent 2013 in its entirety here:

Tags: Americas Got Talent Spoilers