Question: What month did the performer of "Heartbeat Song" win?

full_context: Document 1: American Idol: The final showdown was between Justin Guarini, one of the early favorites, and Kelly Clarkson. Clarkson was not initially thought of as a contender, but impressed the judges with some good performances in the final rounds, such as her performance of Aretha Franklin's "Natural Woman", and Betty Hutton's "Stuff Like That There", and eventually won the crown on September 4, 2002.
Document 2: Beat of My Heart: "Beat of My Heart" is a song recorded by American singer Hilary Duff for her first compilation album, "Most Wanted" (2005). It was written by Duff and the Dead Executives, a record production team consisting of Jason Epperson, Joel and Benji Madden. Along with the three other new songs on "Most Wanted", "Beat of My Heart" was crafted with the intention of having a "totally different sound" from Duff's previous material. It is an up-tempo new wave-inspired electropop song that incorporates elements of bubblegum pop and dance music in its production. Lyrically, "Beat of My Heart" can be interpreted in many ways. For Duff, it tells the story of a woman "com[ing] out of her shell again" after a bad break-up.
Document 3: Heartbeat Song (Kelly Clarkson song): "Heartbeat Song" is a song by American singer Kelly Clarkson from her seventh studio album, "Piece by Piece" (2015). Written by Mitch Allan, Audra Mae, Kara DioGuardi, and Jason Evigan, the song is an uptempo synthpop track produced by Greg Kurstin. Lyrically, it sings of meeting a person who restores someone's faith in love. Inspired by 1980s synthpop music, "Heartbeat Song" was released by RCA Records as the album's lead single on January 12, 2015.
Document 4: Justin Guarini: Justin Guarini (born Justin Eldrin Bell; October 28, 1978) is an American singer / musician, actor, host and producer, who in 2002 was the runner - up on the first season of American Idol.
Document 5: Never Again (Kelly Clarkson song): "Never Again" is a song recorded by American pop singer Kelly Clarkson for her third studio album, "My December" (2007). Clarkson co-wrote the song with Jimmy Messer while produced by American producer and musician David Kahne. Clarkson stated that the song was written as a counterpart to the songs from her second studio album, "Breakaway" (2004), and was almost removed because of its harsh lyrical nature. RCA Records serviced the song to mainstream radios in the United States on April 24, 2007. "Never Again" features a stronger rock sound than Clarkson's previous releases, but maintains some pop undertones. It relies on strings, guitar riffs and drums and is centered on angry, abrasive lyrics.
Document 6: American Idol: Ruben Studdard emerged as the winner, beating Clay Aiken by a small margin. Out of a total of 24 million votes, Studdard finished just 134,000 votes ahead of Aiken. This slim margin of victory was controversial due to the large number of calls that failed to get through. In an interview prior to season five, executive producer Nigel Lythgoe indicated that Aiken had led the fan voting from the wildcard week onward until the finale.
Document 7: American Idol: The two finalists were Kris Allen and Adam Lambert, both of whom had previously landed in the bottom three at the top five. Allen won the contest in the most controversial voting result since season two. It was claimed, later retracted, that 38 million of the 100 million votes cast on the night came from Allen's home state of Arkansas alone, and that AT&T employees unfairly influenced the votes by giving lessons on power-texting at viewing parties in Arkansas.
Document 8: Stronger (What Doesn't Kill You): ``Stronger (What Does n't Kill You) ''is a song by American recording artist Kelly Clarkson and the titular song from her fifth studio album, Stronger (2011). Originally titled as`` What Does n't Kill You (Stronger)'', the song served as the album's second single on January 17, 2012 through RCA Records. Written by Jörgen Elofsson, Ali Tamposi, and David Gamson, with additional writing and production by Greg Kurstin, ``Stronger ''is an uptempo song which draws from the genres of dance - pop and electropop. Its lyrical content mainly explores themes of empowerment and recovery following a heartbreak, with the chorus inspired by a Friedrich Nietzsche quotation:`` That which does not kill us makes us stronger.''
Document 9: American Idol: In the May 23 season finale, Jordin Sparks was declared the winner with the runner-up being Blake Lewis. Sparks has had some success as a recording artist post-Idol.
Document 10: American Idol: In what was to become a tradition, Clarkson performed the coronation song during the finale, and released the song immediately after the season ended. The single, "A Moment Like This", went on to break a 38-year-old record held by The Beatles for the biggest leap to number one on the Billboard Hot 100. Guarini did not release any song immediately after the show and remains the only runner-up not to do so. Both Clarkson and Guarini made a musical film, From Justin to Kelly, which was released in 2003 but was widely panned. Clarkson has since become the most successful Idol contestant internationally, with worldwide album sales of more than 23 million.
Document 11: American Idol: Both finalists found success after the show, but Aiken out-performed Studdard's coronation song "Flying Without Wings" with his single release from the show "This Is the Night", as well as in their subsequent album releases. The fourth-place finisher Josh Gracin also enjoyed some success as a country singer.
Document 12: Since U Been Gone: "Since U Been Gone" is a song recorded by American singer Kelly Clarkson from her second studio album, "Breakaway" (2004). The song, which was written and produced by Max Martin and Lukasz "Dr. Luke" Gottwald, was released as the lead single from "Breakaway" two weeks before the album was released. It is an uptempo pop rock and power pop power ballad that infuses electronic sound with a mixture of soft and loud alternative rock sound. Martin originally wrote "Since U Been Gone" with Pink in mind but she turned it down. It was then given to Hilary Duff but she rejected the song because she could not reach its higher notes. The song was finally given to Clarkson after Clive Davis convinced the writers to give it to her. Clarkson decided to add heavier guitars and harder drums to the song after noticing that the demo had an obvious pop sound. Lyrically, the song is written from a woman's point of view where she expresses her sense of relief with the end of her troubled relationship.
Document 13: I Do Not Hook Up: "I Do Not Hook Up" is a song performed by American pop singer-songwriter Kelly Clarkson, released as the second single from her fourth studio album, "All I Ever Wanted" (2009). The song was composed by Greg Wells, Kara DioGuardi and American singer and songwriter Katy Perry. Perry had originally written the song for her own album, but following her removal from the Def Jam label, she gave the song and "Long Shot" to Clarkson for her fourth album. RCA Records serviced the song to mainstream radios in the United States on April 14, 2009. "I Do Not Hook Up" is a dance-rock and power pop song that is structured upon a muscular arrangement with lyrics about empowerment and healthy relationships.
Document 14: One Minute: "One Minute" is a song recorded by American recording artist Kelly Clarkson taken from her third studio album, "My December" (2007). The song served as the album's second single in Australia on September 18, 2007 through 19 Recordings and RCA Records. Clarkson originally wrote it for her second studio album, "Breakaway" (2004), with songwriters Kara DioGuardi, Chantal Kreviazuk and Raine Maida; however, it did not make the final track listing. It was then reworked for "My December", being produced by David Kahne, and co-produced by Jason Halbert and Jimmy Messer. "One Minute" is an alternative rock song with electropop influences, and consists of "rapid-fire give-and-take verses."
Document 15: Kelly Clarkson: Kelly Brianne Clarkson (born April 24, 1982) is an American singer and songwriter. She rose to fame in 2002 after winning the inaugural season of the television series American Idol, which earned her a record deal with RCA Records. Clarkson's debut single, ``A Moment Like This '', topped the US Billboard Hot 100 chart and became the country's best - selling single of 2002. It was followed by the release of her debut album, Thankful (2003), which debuted atop the US Billboard 200. Trying to reinvent her image, Clarkson decided to part ways with Idol management and her second album, Breakaway (2004), featured a pop rock sound. It sold over 12 million copies worldwide and earned Clarkson two Grammy Awards.
ground_truth: September
sub_queries: Heartbeat Song >> performer Answer: Kelly Clarkson
What month did Kelly Clarkson win? Answer: September