An 18-year-old contestant from Arkansas wowed the judges and advanced on American Idol in an audition that aired Sunday night on ABC. Noah Davis, who is from Royal, a community with a population of about 4,500 near Hot Springs, charmed the panel made up of Lionel Richie, Katy Perry and Luke Bryan. “I grew up on a little farm, but I felt like the city’s calling me,” he said. When asked what he would buy if he wins the competition, Davis had a quick answer. “I would buy an alpaca. Or multiple. Lots of them,” he said. “They’re adorable.” Davis then sang and played piano to deliver a soulful rendition of Rihanna’s “Stay.” Davis, who is taking a break from studying nursing at Arkansas Tech University, received hugs from the judges afterward. “Can I say something to you?” Richie said. “If you want an alpaca, you can have an alpaca.” American Idol airs Sundays at 7 p.m.