I'll try to answer as best as I can. Survival Um... I'm not sure.... Pfff.... Spears? Piano, apparently.
But if the song plays when you're in danger or whatever why would I change it to something that doesn't fit?
You don't have to. What you do need to do is have something keeping it from being a copy of the original. And no, you can't just bass-boost it.
Survival
Um... I'm not sure....
Pfff.... Spears?
Piano, apparently.