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
Originally intended for Katy Perry but ultimately recorded by Beyoncé [13, 21]. Theme and Impact
Written as a potential hit for Rihanna or Beyoncé before Sia decided to keep it for herself [6].
"Unstoppable" is widely regarded as a self-empowerment anthem.
While there is no official version of "Unstoppable" featuring Rihanna , the two artists are closely linked through their frequent collaborations, most notably with Sia writing Rihanna's hit single "Diamonds" [10]. Fans often associate them due to their similar vocal textures and Sia’s history of writing songs for Rihanna, leading to popular mashups and fan-made edits that blend "Unstoppable" with tracks like "Diamonds" [4, 5]. Artist: Sia [17].
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].
The track saw a massive resurgence years after its release, becoming a global hit and a staple in advertising and motivational content [22].