If you are referring to the unreleased track "Bad Chick," the story often shared by fans is that it was recorded during a time when Demi was transitioning from her "Disney" image into a more mature, edgy rock-pop sound.
While the title is different, this is her most famous "sassy/bad girl" anthem, often grouped with keywords like "bad chick" in fan-made playlists. The Story Behind the Music Demi Lovato Bad Chick mp3
There is no officially released song by Demi Lovato titled If you are referring to the unreleased track
This is a heavily circulated unreleased track from earlier in Demi's career (often associated with the Demi or Confident eras). It is a pop-rock anthem about female empowerment and confidence. It is a pop-rock anthem about female empowerment
Recommend from her rock-leaning albums like Holy Fvck or Revamped .
However, it is likely you are looking for one of the following tracks with similar themes or titles:
It features heavy percussion and Demi's signature "power belt," similar to her work on the Holy Fvck album but with a more polished pop production. If you'd like, I can: Help you find the lyrics to "Bad Chick" or "Bad Girl."