Epic Songs You Didn't Know Sia Wrote

Will Young, "You Don't Know" (2008)

Sia broke into the world of pop songwriting early on with this sweet ballad sung by Will Young, the first-ever winner of British singing competition Pop Idol. As well as appearing on Young's fourth album, it was also released on Sia's fourth LP.

Christina Aguilera, "Bound to You" (2010)

In 2010, Sia began working primarily with Christina Aguilera. She appeared in Burlesque alongside Cher and belted out this track.

Photo: YouTube

Rihanna, "Diamonds" (2012)

Sia's first Number One hit for another artist came in the form of "Diamonds,". The success of the song led Rihanna and her manager to reach out to Sia as Rihanna prepared her just-finished eighth album Anti. "Her manager said, 'We want 'Diamonds,'" Sia told Rolling Stone last year about the initial Anti meetings. "'We need soul. We want some music that has feeling.'" While attempting to write an updated "Diamonds," Sia instead ended up with This Is Acting single "Cheap Thrills."

Ne-Yo, "Let Me Love You (Until You Learn to Love Yourself)" (2012)

Sia teamed up with songwriting and production team StarGate on this Ne-Yo hit. The single became his first to enter the Top 10 since 2008. The Sia and StarGate collaboration was the team's second successful endeavor, quickly following up the success they had with Rihanna's "Diamonds."

Photo: YouTube

Celine Dion, "Loved Me Back to Life" (2013)

Loved Me Back to Life was Celine Dion's first English-language album in six years, and the lead single of the same name was a booming statement for the French-Canadian vocalist. As she went poppier, she brought the "My Heart Will Go On" belter with her, penning a hard-grooving track that featured Dion in a sleek new context.

Photo: YouTube

Britney Spears, "Perfume" (2013)

Britney Spears promised her most "personal" album yet with 2013's Britney Jean, and no song delivered on the pledge more than "Perfume," one of the most vulnerable power ballads of Spears' career. 

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Beyonce, "Pretty Hurts" (2013)

"Pretty Hurts" was the first song fans heard off Beyoncé's eponymous 2013 album, released with no warning. "She's very Frankenstein when she comes to songs," Sia detailed of the "writing camp" atmosphere in the Hamptons. "She'll say, 'I like the verse from that. I like the pre-chorus from that. Can you try mixing it with that?'"

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Katy Perry, "Double Rainbow" (2013)

One of the most earnest moments on Katy Perry's Prism LP was "Double Rainbow," the simple, ethereal ballad she co-wrote with Sia and Greg Kurstin. "I really wanted her to sing some of my songs," she told RS. "Mostly because I love her as a person." Perry also almost sang Sia's collaboration with Diplo and the Weeknd, "Elastic Heart.

Photo: YouTube

Lea Michele, "Cannonball" (2014)

After Lea Michele became Glee's first breakout star, her debut solo LP, Louder, was highly anticipated. Her first single, "Cannonball," was the perfect introduction to Michele's new life as a pop diva.

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Kylie Minogue, "Sexercize" (2014)

Sia made her debut as an executive producer on Kylie Minogue's exciting 12th album, Kiss Me Once. She mostly took a backseat on the writing for the LP, though she did contribute to a few songs, including the campy throwback "Sexercize."

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Shakira, "Chasing Shadows" (2014)

"Chasing Shadows" was one of several songs that Sia wrote for Shakira, but it was the only one to make the Colombian singer-songwriter's self-titled album. Sia had told RS that at least one of the songs on her 2016 album This Is Acting had been a Shakira reject. "You'll know that it was a Shakira reject because I sound like Shakira," she said.

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Pitbull Featuring Jennifer Lopez and Claudie Leitte, "We Are One (Ole Ola)" (2014)

Sia co-wrote the soundtrack for one of the the world's biggest sporting events when she helped create "We Are One" for the FIFA World Cup. Pitbull, Jennifer Lopez and Brazilian singer Claudie Leitte rapped and sang, respectively, on the uplifting, catchy and fun Latin-house single that became an international hit.

Photo: YouTube

Jessie J, "Flashlight" (2015)

Songs by both Sia and Jessie J had been huge plot points in the original Pitch Perfect, so it was no coincidence that the pair linked up for the sequel's most important track, "Flashlight." Sia co-wrote the song with a pre-fame Sam Smith, though it was not the song she originally intended for the film. "The truth is that we wrote 'Bird Set Free' for Pitch Perfect 2," she told RS. "They rejected it and took 'Flashlight.' That become a big thing through the movie, but I could not believe they rejected 'Bird Set Free' because to me it was such a big, anthemic, fun, sing-along-in-the-car song."

Photo: YouTube

Kelly Clarkson, "Invincible" (2015)

When Sia and Kelly Clarkson teamed for Clarkson's 2015 electropop LP, Piece by Piece, the results were as explosive as expected.

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Carly Rae Jepsen, "Making the Most of the Night" (2015)

Back in 2013, Sia praised Carly Rae Jepsen on Twitter, dubbing the "Call Me Maybe" singer an "epic songwriter." Sia co-wrote two of the standout tracks on Jepsen's 2015 LP, Emotion, including "Making the Most of the Night," the LP's most driving and exciting song.