IU gained much fame with her new song Good Day and she successfully upgraded her status to become the nation's sister.

However,her 3 octaves part in her latest hit song Good Day has caused some debates among fans,many claimed that she is well-known just because of the 3 octave part of the song.During an interview,IU confessed that she will stop singing the 3 octave of her song and will concentrate more on her singing skills and the control of emotions.

Any opinion to voice concerning this issue?

Source: Daum News