IU debuted in 2008 at the age of 15, and soon became known for her clear-voiced take on energetic bubblegum pop songs and hushed, solemn ballads. But her breakthrough single, “Good Day” (with its famo…
IU debuted in 2008 at the age of 15, and soon became known for her clear-voiced take on energetic bubblegum pop songs and hushed, solemn ballads. But her breakthrough single, “Good Day” (with its famo…