Are you trying to decipher the words, or trying to remix the vocals?

If you are trying to remix it, you're often better off spending the time trying to get the original tracks than finding a magic trick.
If you are trying to decipher the lyrics the approach may be much different.

Why exactly do you want to "bring the vocals out without disturbing the music" ?

I do not work here, but the benefits are still awesome
Make your sound your own!