Sia - Unstoppable (with Rihanna) — Free

Written as a potential hit for Rihanna or Beyoncé before Sia decided to keep it for herself [6].

The song uses metaphors like a "Porsche with no brakes" and "putting my armor on" to describe building confidence and emotional resilience [3, 5]. Sia - Unstoppable (With Rihanna)

Originally intended for Katy Perry but ultimately recorded by Beyoncé [13, 21]. Theme and Impact Written as a potential hit for Rihanna or