SEOUL, Apr 26: South Korean rapper Psy, whose latest video “Gentleman” tracked global megahit “Gangnam Style” by going viral on the Internet, has been knocked from the top of the music charts in his native country by a 63-year-old easy listening pop singer. “Gangnam Style”, which holds the YouTube record for most views with more than 1.5 billion, catapulted the sunglassed Korean with the garish jackets to world stardom and made him one of the best-known faces to grace the growing K-pop music scene. (agencies)