Sia - Rainbow [My Little Pony: The Movie 2017 Soundtrack]

My Little Pony: The Movie is a 2017 animated musical fantasy film based on the animated television series My Little Pony: Friendship Is Magic, which was developed as part of the 2010 relaunch of the My Little Pony franchise by Hasbro. Directed by Jayson Thiessen from a story and screenplay by Meghan McCarthy, the plot follows the alicorn Twilight Sparkle, her five pony friends – collectively known as The Mane 6 – and her dragon friend Spike embarking on a quest to save their home of Equestria from an evil conqueror while gaining new friends in the process. In addition to the show's regular voice cast reprising their roles, the film features the voices of Emily Blunt, Kristin Chenoweth, Liev Schreiber, Michael Peña, Sia, Taye Diggs, Uzo Aduba, and Zoe Saldana as new characters.
Sia contributed an original song to the film, "Rainbow", which was released as a single on September 15, 2017.