Sometimes, a supposedly to be great Korean movie was simply ruined by a screenplay full of clowns and jerks, horrible scenarios, moronic dialog, exaggerated over-the-top acting and worst of all, a director who didn't know how to make it great.
This Korean movie is just like that. For the singing part, I'll give it 10/10, acting 5/10, storyline 1/10, directing 5/10, supporting actors and roles 4/10. This movie could be one of the GOAT Korean movies if it didn't lean too much to the comedy side, making it more serious without too many jerk-like clowns. I have to fast forward to the more serious scenes of singing (sadly, there were only a few) to skip those ridiculous segments (sadly, there were too many). What a shameful waste!