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\n\tTaylor Swift<\/a> says goodbye to the Eras Tour<\/a> in the official trailer for her six-episode Disney+ docuseries \u201cThe End of an Era.\u201d<\/p>\n \n\t\u201cI\u2019m very aware of mysterious forces at play that I will never have any control of,\u201d Swift says in an ominous start to the trailer, as footage of her being brought to stage in a cleaning cart plays. \u201cThis show created a bonding experience for like 70,000 people all at once. There\u2019s something very special about that.\u201d<\/p>\n \n\tThe docuseries, the first two episodes of which will premiere Dec. 12, chronicles the \u201cdevelopment, impact and inner-workings\u201d of Swift\u2019s record-breaking Eras Tour, according to a press release. Along with behind-the-scenes clips of how the show came together and an exclusive interview with Swift, the trailer reveals that the series documents the beginnings of Swift\u2019s relationship with her now fianc\u00e9, Kansas City Chiefs tight end Travis Kelce. <\/p>\n \n\t\u201cTravis Kelce, he brings a lot of happiness,\u201d Swift\u2019s mom Andrea says in the trailer, as Swift adds: \u201cWe basically have the same job.\u201d In another scene featured in the trailer, Swift and Kelce share a sweet kiss as Swift comes off stage.<\/p>\n \n\tEras Tour guests Sabrina Carpenter, Ed Sheeran, Gracie Abrams and Florence Welch also make an appearance in the trailer during their respective surprise performances. Backstage footage is shown of Carpenter and Swift planning their bit ahead of the New Orleans show, when Swift called Carpenter on the phone before bringing her out on stage.<\/p>\n \n\t\u201cThe End of an Era\u201d also promises to take fans inside Swift\u2019s planning process for each concert\u2019s surprise song section. At the end of the trailer, Swift explains to her mom: \u201cSo it goes \u2018New Year\u2019s Day\u2019 verse and chorus, \u2018Manuscript\u2019 bridge into \u2018Long Live\u2019 bridge, into the down verse of \u2018Long Live,\u2019 into \u2018hold onto the memories they will hold onto you,\u2019 into \u2018Long Live\u2019 chorus but slow it down to half-time, \u2018New Year\u2019s Day\u2019 chords underneath it, into the last verse of \u2018The Manuscript.’\u201d <\/p>\n \n\t\u201cThat\u2019s complicated!\u201d Andrea exclaims.<\/p>\n \n\tWatch the trailer for \u201cEnd of an Era\u201d below.<\/p>\n