This is a snippet interviews famous composer named Park Junsu who is often involved in drama soundtrack.

In that interview Park Junsu asked “Among the many singers, why did you choose Yesung Super Junior ‘to sing your song?”

Remember the song “It Has To Be You” in the drama Cinderrella dinyanyiin Yesung Sister? Now the composer’s songs Junsu Park.

This is the answer

“Not difficult to write” It Has To Be You. ” Composers often sat alone in front of the keyboard and things will flow with ease … manufacturers recommend me some singers for the song, some of them have participated in different OST, Yesung they also recommend. Although Yesung went from a group, I believe his baritone voice is the voice of the best in our country. After you record and mix sound, her voice is very sweet and wonderful, I am completely satisfied ”

Source:Naver