Question: What song, written by Taylor Swift during her freshman year of high school, was included in her third studio album, "Speak Now"?

Context articles: Sparks Fly (song)
Long Live (Taylor Swift song)
Taylor Swift (album)
The Story of Us (song)
Our Song (Taylor Swift song)
Mine (Taylor Swift song)
Red (Taylor Swift album)
Fifteen (song)
Tim McGraw (song)
Back to December

"Sparks Fly" is a song written and recorded by American singer-songwriter Taylor Swift for her third studio album "Speak Now" (2010).
 Swift wrote the song when she was 16 years old, prior to the release of her debut single "Tim McGraw" in 2006.
 Following a 2007 live performance of the song, "Sparks Fly" grew in popularity among Swift's fanbase.
 While "Speak Now" was under production, she received requests from fans to include the song on the album.
 Produced by Swift and Nathan Chapman, the song was serviced to country radio in the United States by Big Machine Records on July 18, 2011, as the fifth single from "Speak Now".
 A CD single was released on Swift's official store for a limited time on August 10, 2011.
"Long Live" is a song written and recorded by American singer-songwriter Taylor Swift for her third studio album "Speak Now" (2010).
 The original version of the song was written by Swift, and produced by Nathan Chapman with Swift's assistance, and served as the closing track on "Speak Now".
 On the strength of digital downloads following the album's release, the song charted at No. 85 on the U.S. "Billboard" Hot 100.
Taylor Swift is the debut studio album by American singer-songwriter Taylor Swift, released on October 24, 2006, by Big Machine Records.
 Swift was 16 years old at the time of the album's release and wrote its songs during her freshman year of high school.
 Swift has writing credits on all of the album's songs, including those co-written with Liz Rose.
 Swift experimented with several producers, ultimately choosing Nathan Chapman, who had produced her demo album.
 Musically, the album is country music styled, and lyrically it speaks of romantic relationships, a couple of which Swift wrote from observing relationships before being in one.
 Lyrics also touch on Swift's personal struggles in high school.
"The Story of Us" is a song written and recorded by American singer-songwriter Taylor Swift for her third studio album, "Speak Now" (2010).
 Produced by Swift alongside Nathan Chapman, the song was sent to mainstream radio in the United States on April 19, 2011, as the fourth single from "Speak Now".
 Swift composed "The Story of Us" regarding the time when she encountered an ex-boyfriend of hers at the 2010 CMT Music Awards.
 At the event, the two attempted to ignore each other, which inspired Swift to compose the song.
"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.
"Mine" is a song written and performed by American singer-songwriter Taylor Swift.
 Produced by Swift along with Nathan Chapman, it was released as the lead single from Swift's third studio album, "Speak Now" (2010) by Big Machine Records.
 Following an unauthorized internet leak, the song was released on August 4, 2010, two weeks earlier than the intended release date.
 Swift was inspired to write "Mine" after reflecting on one of her unnamed crushes and explained that the song is about her tendency to run from love.
 The song contains elements of power-pop and its lyrics speak of the ups and downs of a young love.
Red is the fourth studio album by American singer-songwriter Taylor Swift.
 It was released on October 22, 2012, by Big Machine Records, as the follow-up to her third studio album, "Speak Now".
 The album title was inspired by the "semi-toxic relationships" that Swift experienced during the process of conceiving this album, which Swift described the emotions she felt as "red emotions" due to their intense and tumultuous nature.
 "Red" touches on Swift's signature themes of love and heartbreak, however, from a more mature perspective while exploring other themes such as fame and the pressure of being in the limelight.
 The album features collaborations with producers and guest artists such as Gary Lightbody of Snow Patrol and Ed Sheeran and is noted for Swift's experimentation with new musical genres.
 Swift completed The Red Tour in support of the album on June 12, 2014, which became the highest-grossing tour of all time by a country artist, grossing over $150 million.
"Fifteen" is a country pop song performed by American singer-songwriter Taylor Swift.
 Swift self-penned the song and co-produced it along with Nathan Chapman.
 "Fifteen" was released on August 30, 2009 by Big Machine Records, as the fourth single from Swift's second studio album, "Fearless" (2008).
 The song was inspired by Swift's freshman year of high school at Hendersonville High School, where she first encountered heartbreak, along with her best friend Abigail Anderson.
 After writing it, Swift asked Anderson for authorization to record the song (due to personal references in the song); Anderson affirmed and it was ultimately included on "Fearless".
 "Fifteen" is a ballad, which has Swift reminiscing on events that occurred to her and her best friend at the age of 15 and cautioning teenagers to not fall in love easily.
"Tim McGraw" is the debut single and first published song recorded by American singer-songwriter Taylor Swift.
 The song was written by Swift and Liz Rose, and produced by Nathan Chapman.
 It was released on June 19, 2006 by Big Machine Records as Swift's debut single and the lead single from Swift's eponymous debut album.
 Swift wrote "Tim McGraw" during her freshman year of high school, knowing that she and her senior boyfriend would break up at the end of the year when he left for college.
 The song was written about all the different things that would remind the subject of Swift and their time spent together, once he departed.
 "Tim McGraw" is a musical interconnection of traditional and modern country music.
 Lyrically, the track lists items in order to associate a past relationship, one of them being country artist Tim McGraw's music.
"Back to December" is a song written and recorded by American singer/songwriter Taylor Swift for her third studio album "Speak Now" (2010).
 The song was sent to country radio in the United States on November 15, 2010, as the second single from "Speak Now".
 According to Swift, "Back to December" is the first time she ever apologizes to someone in a song.
 Critics speculate that the song is about Taylor Lautner, Swift's ex-boyfriend, which was later acknowledged by Lautner.
 "Back to December" is considered an orchestral country pop ballad and its lyrics are a remorseful plea for forgiveness for breaking up with a former lover.