Wow, wasn't expecting this to be as good as it was. I was caught up in the whole classical music world without realising it. Fabulous cast, it's a pity that more of them are not credited on this IMBD site. If this was an American cast series I'm sure there would be a full cast listing. The plot is fabulous, it has more twists and turns than a Disneyland theme park. The relationship between Mr Yoo and Cha Seeum is so beautifully acted, its subtle to the extreme, thoughtful and tender. You can see where his love comes from and where he wants it to go. The themes are so multi-faceted too, adultery, passion, obsession, jealousy, love. It's all there. The music during the end credits is beautiful too, it's owned my eyes to Korean music. Just watch this, you'll want to binge watch it too.