Question: What song that Jake Sinclair worked on was performed by Taylor Swift?
Context: "LA Devotee" is a song by American rock band Panic!  at the Disco.  It was released as the second promotional single from the band's fifth studio album, "Death of a Bachelor", on November 26, 2015 through Fueled by Ramen and DCD2.  The song was written by Brendon Urie, White Sea and Jake Sinclair and was produced by Sinclair. "Victorious" is a song by American rock band Panic!  at the Disco released as the second single from the band's fifth studio album, "Death of a Bachelor", on September 29, 2015 by Fueled by Ramen and DCD2.  The song was written by Brendon Urie, Christopher J Baran, Mike Viola, White Sea, Jake Sinclair, Alex DeLeon, and Rivers Cuomo and was produced by Urie and Sinclair.  A music video for the song was released on YouTube on November 13, 2015. "Everything Has Changed" is a song written and performed by American singer-songwriter Taylor Swift and English singer-songwriter Ed Sheeran, taken from Swift's fourth studio album, "Red" (2012).  Produced by Butch Walker, the track was released as the sixth single from the album on July 16, 2013.  "Everything Has Changed" is a guitar ballad combining folk and pop genres about "wanting to get to know a new lover better". "Crazy=Genius" is a song by American rock band Panic!  at the Disco and is the sixth track on the band's fifth studio album, "Death of a Bachelor" (2016).  It was written by Brendon Urie, Sam Hollander, and Jake Sinclair and was produced by Sinclair.  The song makes references to musicians Dennis Wilson, Brian Wilson, and Mike Love from The Beach Boys. Jake Sinclair (born March 7, 1985) is an American record producer, audio engineer, mixing engineer, multi-instrumentalist, vocalist, and songwriter.  His production, engineering, songwriting, and mixing credits include Weezer, Fall Out Boy, Panic!  at the Disco, 5 Seconds of Summer, Pink, New Politics, Andrew McMahon in the Wilderness, Gin Wigmore, and Train.  Sinclair co-wrote and produced Panic!  at the Disco's "Death of a Bachelor" album (which debuted at number one on the US Billboard 200) and produced Weezer's 2016 "Weezer (White Album)".  Both were nominated for Best Rock Album at the 59th Annual Grammy Awards.  He co-wrote and produced "Uma Thurman" by Fall Out Boy, which debuted at number one on the U.S. iTunes Chart, reached number 22 on the Billboard Hot 100, and was certified 2X Platinum by the RIAA in December 2015.  Sinclair received a Grammy nomination for Album of the Year for his work as engineer and bassist on Taylor Swift's "Everything Has Changed" alongside producer Butch Walker.  He co-wrote and produced the debut single, "She Looks So Perfect" by 5 Seconds of Summer that peaked at number one in over five countries and won "Song of the Year" at the 2014 ARIA Awards.  Sinclair is the former bassist of the indie/pop rock band The Films and the lead singer and producer of the indie pop duo Alohaha. "Fearless" is a country pop song performed by American singer-songwriter Taylor Swift.  The song was co-written by Swift in collaboration with Liz Rose and Hillary Lindsey and produced by Nathan Chapman and Swift.  "Fearless" was released on January 3, 2010 by Big Machine Records as the fifth and final single from Swift's second studio album of the same name (2008).  Swift composed the song while traveling on tour to promote her eponymous debut album, "Taylor Swift" (2006).  She wrote "Fearless" in regard to the fearlessness of falling in love and eventually titled her second studio album after the song.  Musically, it contains qualities commonly found in country pop music and, lyrically, is about a perfect first date. "Picture to Burn" is a song recorded by American singer-songwriter Taylor Swift.  It was co-written by Swift and Liz Rose, and produced by Nathan Chapman.  It was released on February 3, 2008 by Big Machine Records as the fourth single from Swift's eponymous studio album, "Taylor Swift" (2006).  It was inspired by the narcissistic and cocky nature of her former high school classmate and ex-boyfriend Jordan Alford with whom Swift never established a formal relationship.  In retrospect, Swift has stated that she has evolved on a personal level and as a songwriter, claiming she processed emotions differently since "Picture to Burn".  The song was chosen as a single based on the audience's reaction to it in concert.  Musically, the track is of the country rock genre with prominent usage of guitar, banjo, and drums.  The lyrics concern setting fire to photographs of a former boyfriend. "Our Song" is a country song performed by American singer-songwriter Taylor Swift.  The song was written by Swift and produced by Nathan Chapman.  It was released on September 9, 2007 by Big Machine Records as the third single from Swift's eponymous debut album, "Taylor Swift" (2006).  Swift solely composed "Our Song" for the talent show of her freshman year in high school, about a boyfriend who she did not have a song with.  It was included on "Taylor Swift" as she recalled its popularity with her classmates.  The uptempo track is musically driven mainly by banjo and lyrically describes a young couple who use the events in their lives in place of a regular song. Sirtris Pharmaceuticals, Inc. was a biotechnology company based in Cambridge, MA that developed therapies for type 2 diabetes, cancer, and other diseases.  Conceived in 2004 by Harvard University biologist David Sinclair and serial entrepreneur Andrew Perlman, and founded that year by Sinclair and Perlman, along with Christoph Westphal, Richard Aldrich, Richard Pops, and Paul Schimmel, the company was focused on developing Sinclair's research into activators of sirtuins, work that began in the laboratory of Leonard P. Guarente where Sinclair worked as a post-doc before starting his own lab. The Taylor Swift Holiday Collection, originally titled Sounds of the Season: The Taylor Swift Holiday Collection, is a Christmas EP by American singer Taylor Swift.  The EP was first released on October 14, 2007 by Big Machine Records exclusively to Target stores in the United States and online.  The release was originally a limited release for the 2007 holiday season, but was re-released to iTunes and Amazon.com on December 2, 2008 and again in October 2009 to Target stores.  "The Taylor Swift Holiday Collection" features cover versions of Christmas songs and two original tracks written by Swift, "Christmases When You Were Mine" and "Christmas Must Be Something More", all of which have a country pop sound.
Answer: Everything Has Changed