Searching for an old song?

i am sorry for not giving any information i honestly have no clue what this song is called or its band name is, all i remember is it switched between a more calm, female singing then a bit harder male voice, i thought the name was called heaven and hell, but i was wrong so can anyone name songs or bands that sing songs like this?

if i had to say the female voice was more like.... idk... i guess classical? not really sure, never really pay attention to genres, and the male vioce was... i'd probably say rock, his voice sounding something like he was trying to mimic a demonic voice, the only time i heard this song was on youtube of a tribute to gaara's fights(from naruto) but then again, it was like maybe a year or two ago

Not male/female , but do you by any chance mean this song?
Still loving you -Scorpions?
http://www.youtube.com/watch?v=jX6DGToDanc

no =\

If I close my eyes forever by Lita Ford and Ozzy Osbourne?
http://www.youtube.com/watch?v=Zy3fJ8Nmzyw