Swift delivered a typically polished performance for Amazon Prime members, who watched it stream live from New York City in a first-of-its-kind event to promote next week's annual Prime Day, which this year lasts 48 hours.
The livestream was impressively flawless, beginning only a minute or two after its advertised 9 p.m. Eastern start time.
Hosted by Jane Lynch, the concert opened with a solid set by Dua Lipa, followed by Becky G and then SZA.
Each five-song set was bookended -- one might even say stuffed -- with pitches for Amazon products, including Alexa and the company's music-streaming service, and commercials for Amazon shows such as "Modern Love" and "Carnival Row."
All of which meant Swift didn't take the stage until well after 11 p.m., with her screaming fans more than ready. Wearing a one-piece jacket and hot pants featuring glittering, vertical black-and-purple stripes, she opened her set with "ME!," from her forthcoming album, Lover, before delivering eight more hits in a row.
Most songs came from her 2014 album, 1989: "Blank Space," "Welcome to New York," "Style" and "Shake It Off." She also performed one song each from 2017's Reputation, 2012's Red and her second album, 2008's Fearless -- "Delicate," "I Knew You Were Trouble" and "Love Story," respectively.
Lover, due out Aug. 23, also includes the track "You Need to Calm Down," which she performed live for the first time on Wednesday night before closing the show with "Shake It Off" -- perhaps a not-too-subtle nod at her ongoing public scuffle about the rights to her back music catalog.
The crowd enthusiastically shouted along to the bridge: "Just think, while you've been getting down and out about the liars and the dirty, dirty cheats in the world, you could have been getting down to this sick beat."
After the livestream, Amazon broadcast an encore performance of the concert. Prime members or anyone signing up for a 30-day trial can stream it.
Swift's complete set list: