SM vocals are giving bang PD anxiety. At first he tried to poach SM vocal coaches from underneath SM nose - the lil buggers refused & outright laughed, in his face, cus imagine Bts, Bts singing like Exo/Nct/RV - & train Bts & Txt to sing better but that didn't work, obviously. Then he went for some second tier vocal coaches & got em to train Bts & Txt to sing at a superior level, but after few weeks of training the coaches just up & left, cus it was simply impossible. One was even heard saying he could train Lisa more easily to sing better, ...or sing.
Bang pd was at his wits end and ended up purchasing a vocal synthesizer of the most expensive kind. Now he just resorts to that. No more vocal training for his groops.