Kim Bo Kyung (of 'Superstar K2' fame) has lent her vocals for the soundtrack of SBS's new drama, "City Hunter". Following behind�SHINee's Jonghyun and Girl's Day, the singer added her own flavor to the OST with 'Suddenly'. Her powerful vocals add depth to the soundtrack, and she reportedly showed remarkable concentration and charisma during the recording.�'Suddenly' was composed by Oh Joon Sung, who's famous for composing the soundtracks of many popular dramas, including 'Boys Over Flowers', 'Prosecutor Princess', 'My Girl', and 'Witch Yoo Hee'. Check out the track below! Source: Sports World via Nate Tip: Jae