The meaning of your original sentence seems incomplete, because it can reads as one of following which have different meanings: Thank you for coming to the concert -> 공연(콘서트)에 와 주셔서 감사합니다. Thank you for a concert -> 콘서트를 열어주신 것에 감사합니다. (그런데 이 문장으론 왜 감사한지는 알수가 없음.) Thank you for a splendid concert -> 화려한 콘서트에 감사합니다.

@Kelly Polly "Thank you for coming to the concert" = 콘서트에 와 주셔서 감사합니다

@Lisa I would recommend learning Hangeul (first) by itself, not by romanization *Romanization is the worst habit, terrible, not very accurate* There is really no proper way to romanize Korean, as much as there is no proper way to imitate English sound by writing in Konglish. Avoid it, drop it, skip it, ignore it at all costs. It is a crutch that will be very difficult to get rid of if you keep using it.

kam sa ham ni da