What single was popularized by Ronan Keating in 1999? 
Ronan Keating:  He gained worldwide attention when his single "When You Say Nothing at All" was featured in the film "Notting Hill" and peaked at number one in several countries. When You Say Nothing at All:  It is among the best-known hit songs for three different performers: Keith Whitley, who took it to the top of the Billboard Hot Country Singles chart on December 24, 1988; Alison Krauss, whose version was her first solo top-10 country hit in 1995; and Irish pop singer Ronan Keating, whose version was his first solo single and a chart-topper in the United Kingdom and Ireland in 1999.
i don't know