Sia - — Unstoppable (with Rihanna)

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 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. Producer: Jesse Shatkin [9, 17]

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].

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

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