LIKES:
THE SOUND OF MAGIC, concept reminded me a little of (American) K-PAX.
Production was good and so was the cinematography. Special FX were great.
The fantasy aspect of this drama was well done.
All the singing was a little annoying, but I was into the storyline so kept watching
FAN of Ji Chang Took and I like Hwang In Youp too. And I was surprised by how well FL Choi Sung Run acted, she was great.
I loved how they used Bella too.
The conclusion was predictable to a certain extent, but satisfactory.

DISLIKES:
How they handled the bullying, sexual assault & self harm, could’ve been written better. Some of the characters needed better development, which was another writing fail.
Also how they concluded his character was annoying
Ending felt a little rushed and for Na II Deung his future self should’ve been shown as much as Soon Ah Yi’s future self was.
They tried to hint at a romance, but then left it hanging mid way.
Some parts dragged a bit too.
The directing wasn’t the greatest.
I’m not a fan of musicals, but this was bearable, however nothing from the OST stood out or was memorable.

OVERALL:
Do you believe in magic? Yes, this show’s message was enjoyable even with some of the heavier content/topics it had. This fantasy drama could've benefitted from a few more episodes, instead of rushing the last few. The singing parts were tolerable. I would rewatch certain episodes, but not the whole thing again. I would recommend this for others to watch.