The Voice is a reality talent show focusing on singing competition. It's a worldwide series that started in the Netherlands as The Voice of Holland in 2010. Soon after, many other countries including the USA have adapted the format and are airing their national versions. It's part of a talent competition phenomenon that includes American Idol, Britain's Got Talent and Israel's Kochav Nolad (A Star is Born).
We don't know how far this singer will get in the talent competition and how many times Hava Nagila will resound through the airwaves in Thailand, but for the time being, we can just enjoy the performance.