How do you split vocal tracks from the instruments

Basically how do you split vocal track from instruments in a song or a movie just leaving the vocals on a mac

You probably can’t, but have a read through this article for things to try: http://manual.audacityteam.org/man/Tutorial_-_Vocal_Removal_and_Isolation

i know it is sort of possible any other suggestions

All we have is on that page.

i know it is sort of possible

How do you know that?
Koz