sentences:  In the US, Swift is the third best-selling digital singles artist with 121 million certified units, is the first artist to have four albums sell over one million copies within the first week on the "Billboard" 200, and has sold 37.3 million albums.Her UK album and single sales stand at 3.34 million and 17 million, respectively.Swift's career began with a record deal with Big Machine Records in 2005 and the release of her eponymous debut album the following year.