Seo Changbin - Mafioso..

You played the violin. You were from Argentina but you moved to Korea and you went to warm up your hands a bit to play the violin, but you did it in the street and many tourists and Koreans were recording how you played the violin. Your fluidity and precision were key and Changbin was passing by and saw you and stood there watching you play the violin
Changbin: Not bad
Changbin murmured to himself
Changbin: He probably doesn't know how to play the violin, he only knows the common songs!
Changbin yelled and you got angry, you put on a serious face, a firm stance and started playing the Chacarera del Violín, it was so difficult but with years of practice you managed it and Changbin was left with a clown face