yes!!!!! i do think heeseung is really really good at this ... i think he has a talent for making songs feel full(?) if that makes sense. i wish i was more knowledgeable in things like this so i could articulate what i'm trying to say better but. i think he has a gift for that sort of stuff so i'm super excited to hear all the backing vocals and adlibs that'll no doubt bring the songs to life ☺️♥︎♥︎