Ryan explains that the city is no stranger to success, having been where they discovered season five finalist Chris Daughtry.
Joining Simon, Kara and Randy on the panel is Victoria Beckham, making her second guest judging appearance.
He explains that he was taken by his mother against the wishes of his father when he was a child. He performs 'Tempted', and surprises Victoria because she expected him to be "jokey", not good. Simon says he likes his honesty about his background.
Arrives at the auditions with 5-year-old daughter Amelia. She chooses 'The Way I Am' and amuses the panel when she suggests buying Simon Rogaine if he ever needs it. Simon says: '"You're very lippy but you're very funny... I think you're trouble though, I just have a feeling!"
The karaoke host and cover band singer begins to cry as she explains how hard it is achieving her dream. She sings 'I'm The Only One' by Melissa Etheridge. Simon likes her, joking: "You may have come in here just in time to rescue you from corporate hell."
Says he was in a motorcycle accident and doctors thought he would never play guitar again. His rendition of John Mayer's 'Slow Dancing In A Burning Room' gets a mixed response. Simon says he has "no charisma, no effort" and made "no attempt", but Kara and Victoria think he has "a great look"
She arrives with lots of family and friends, including one young girl who gives the judges drawings she has made of them. Tori sings John Mayer's 'Gravity', which again prompts a mixed response. Simon thinks she has an "almost annoying voice", while Victoria loves her image and personality.
After flying 14-hours from Florence to make the audition, she performs 'Something Kinda Ooh' by Girls Aloud. "One of the most meaningful lyrics ever written," says Simon. "You sing so much deeper than you talk, it's weird." Victoria praises her attitude and "beautiful skin".
She explains that she was born premature and weighed just 2lbs. Her rendition of Carrie Underwood's 'Last Name' impresses the panel. "Cute little thing, aren't you?" says Simon. "I like that you're different."
The Not So Good...
The music composition student and football player is the third auditionee to choose a John Mayer song, this time performing 'Bigger Than My Body'. Randy questions if that is the why he "normally, naturally sings", while Kara says he comes off a "bit cocky" and Simon thinks he "could be annoying".
Simon thinks he sounds like he "has been punched and is just screaming". Kenny launches into Mary J. Blige's 'No Drama' in a bid for a second chance. "It's getting worse," says Simon. "You have got to leave."
Arrives dressed in a bikini and sings Billy Ray Cyrus's 'Achy Breaky Heart'. He barely starts before the judges decide they've had enough for the day and head home, leaving him alone in the audition room.
American Idol continues tonight on Fox