Known for his deep, velvety croon, Park Hyo Shin is widely regarded as one of the top ballad singers in South Korea. But seven years into his career, he decided to change it up. In response to feedback from the public, he abandoned the vibrato-heavy “cow calling” technique he'd been using since his debut, and switched to a softer, lighter tone that still retained his signature huskiness. The move only increased his popularity, and it demonstrates the sensitivity and dedication that make his iconic ballads of love and longing so affecting.