- Unstoppable (with Rihanna) | Sia

Originally intended for Katy Perry but ultimately recorded by Beyoncé [13, 21]. Theme and Impact

"Unstoppable" is widely regarded as a self-empowerment anthem. Sia - Unstoppable (With Rihanna)

The song uses metaphors like a "Porsche with no brakes" and "putting my armor on" to describe building confidence and emotional resilience [3, 5]. Originally intended for Katy Perry but ultimately recorded