Originally intended for Katy Perry but ultimately recorded by Beyoncé [13, 21]. Theme and Impact
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 - Unstoppable (With Rihanna)
The album This Is Acting is composed primarily of songs Sia wrote for other major artists that were ultimately rejected. Originally written for Adele [14]. Originally intended for Katy Perry but ultimately recorded
"Unstoppable" is widely regarded as a self-empowerment anthem. Artist: Sia [17]
The song uses metaphors like a "Porsche with no brakes" and "putting my armor on" to describe building confidence and emotional resilience [3, 5].