- Unstoppable (with Rihanna): Sia

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

January 2016 as a promotional single for her seventh studio album, This Is Acting [11, 17]. Writers: Sia Furler and Christopher Braide [11]. Producer: Jesse Shatkin [9, 17]. The "This Is Acting" Concept Sia - Unstoppable (With Rihanna)

The track saw a massive resurgence years after its release, becoming a global hit and a staple in advertising and motivational content [22]. Originally intended for Katy Perry but ultimately recorded

"Unstoppable" is widely regarded as a self-empowerment anthem. This Is Acting [11

Sia notably performed the song to close the 2025 Breakthrough Prize Ceremony [8].

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