Japanese music:
Final Fantasy IV DS - Theme of Love
https://www.youtube.com/watch?v=ZjiI7sNapPc
Mandarin:
丁噹 - 親人
https://www.youtube.com/watch?v=9GsRHtLUoy0
English :
Linda Ronstadt and James Ingram - Somewhere Out There
https://www.youtube.com/watch?v=RkI-B2JWSZI
Mariah Carey - Without You
https://www.youtube.com/watch?v=J8vZUqxlW88
Celine Dion - All By Myself
https://www.youtube.com/watch?v=NGrLb6W5YOM
Celine Dion & Peabo Bryson - Beauty And The Beast
https://www.youtube.com/watch?v=pgYEJHJXFB4
Just let me know if you ever need more. Hope it helps