if this is at all reliable (but the track is still a vocal track):
Opening Vocal '운명의 빛(Light Of Destiny)'
Composed, Arranged by 장성운
vocal by 정진환 (Jin-Hwan Jung)
http://blog.naver.com/PostView.nhn?b...tTypeCall=true
then I supposed if anyone wonders who sings it can possibly know (or confirm it).
D2-22 is also sung by Su-Hye Jo (pretty sure, anyway)
edit: after posting this, I noticed the Vocal part probably refers to all vocal tracks on that disc. I guess I feel a little silly.