Love songs like ROO's "Baby I Love U" will always have a place in K-Pop canon—the sticky-sweet melodies with lilting beats and endless, earnest romance will never go out of style. Thankfully, the honey-voiced Korean singer/songwriter has produced plenty of them. ROO debuted in 2013 with a string of intimate, winsome tracks, showcasing her tender vocals with laidback acoustic arrangements and soft R&B beats. But it's not all sun-soaked daydreams—on hits like "In My World", ROO stands tall and belts over soaring electric guitars alongside a crescendo of pop-rock percussion.