This is perfectly adapted from the Webtoon, perfectly casted throughout the cast. Lee Kwang Soo was absolutley hilarious in his role. I loved him in Entourage and he is great in Sound Of Your Heart as the goofy and immature Jo Suk. The lovable parent duo was a terrific high point of the series - Kim Byung Ok and Kim Mi Kyung couldn't have been more suited to these roles. Byung Ok in the opening episode was particularly terrifc. Completely oblivious to the terror he was causing around the town. I loved the adventures that Kim Dea Myung's character, Jo Joon, took us on as well. The trip to Shanghai was laugh out loud funny as were the side characters that we met along the way. Jung So Min wasn't in all of the episdoes but her parts provided some great comedy. Her relationship with Jo Suk was the perfect amount of embarrasing and heart-warming. The Airport Scene where Ae-Bong misunderstood Jo Su asking for 3 dollars to pay for the bus as asking her out was gold. The set up in the scene, the hints and her ever-building fustration througjout the episdoe. It was just a wonderfully crafted episode. One of my favourite episodes though was Jo Joon's face call episode. Him fustrating his Mum, having an emotional sing along with his Dad and flashing Jo Suk's students, who had to deal with Jo Suk being unaware that his laptop is connected to the screen - this had my rolling on the floor in laughter - I can't praise it more. Just watch Sound Of Your Heart. 10 Episodes under 30 minutes long each. It's so easy to watch and you'll have a heck of a ride watching it. My cheeks hurt after finishing this show.