You know, I feel his progress as a singer was too easy / fast but the characters and their interactions are nice enough that I'm starting to think that struggling to become the best just isn't the point of this manwha.
yeah other than his body being in pain that one time and a bit of a profits cut (tho he's basically a magical agent lol). seems to be good so far and not like a monkey's paw or that one where the actor got possessed xD