The music made this drama for me. When the story became strained, a song from the OST would redeem it. With intriguing plot points and a strong cast, this show probably possesses the best 're-watch'ability of any I've come across. The tension and chemistry between Shin Hye and Guen Suk was enough to keep me watching-- and I think the show did a very good job of embracing that inevitable corniness associated with Korean boy bands and the tired 'gender-switch' storyline. Original, exciting