1989 is the fifth studio album by American singer-songwriter Taylor Swift. It was released on October 27, 2014, through Big Machine Records. Swift began preparing for the album during the same year that Red was released, and during a significant amount of media scrutiny. Over the course of the two-year songwriting period, she primarily collaborated with producers Max Martin and Shellback—Martin served as the album’s executive producer alongside Swift. The album’s title was inspired by the pop music scene of the 1980s, particularly Swift’s birth year.

The album represents a sonic departure from the country music of her previous albums, and is described by Swift as her “first documented official pop album.” In contrast to Swift’s previous work, the production of 1989 consists of drum programming, synthesizers, pulsating bass, processed backing vocals, and guitars. 1989 received generally positive reviews from contemporary music critics and it was ranked as one of the best albums of 2014 by several publications, including Billboard, Time, and Rolling Stone.

After debuting at number one on the U.S. Billboard 200, 1989 sold 1.287 million copies during the first week of release. The total U.S. sales figure from the debut week of 1989 was the highest since 2002, and made Swift the first artist to sell one million or more copies of an album in a week-long period for three albums. 1989 eventually became the best-selling album of 2014 in the U.S. market and has sold over 5.7 million copies as of February 2016, while selling 8.6 million worldwide.

Six singles have been released from the set: “Shake It Off”, “Blank Space”, and “Bad Blood” all reached number one on the US Billboard Hot 100, while “Style” peaked at number six, “Wildest Dreams” at number five, and “Out of the Woods” peaking at number 18 in 2014. The first five singles have all reached number one on the Adult Top 40 and Mainstream Top 40 and all have received a multi-platinum certification from the Recording Industry Association of America (RIAA).

1989 won the Grammy Award for Album of the Year, making Swift the first and only female artist so far to win the top prize at the ceremony twice with her own works, having previously won in 2010 for Fearless, and her third nomination overall after Red in 2014. The album also won Best Pop Vocal Album, Swift’s first victory in the category.

The first two singles “Shake It Off” (in 2015) and “Blank Space” (in 2016) were both nominated for Record of the Year, Song of the Year and Best Pop Solo Performance. The “Bad Blood” remix featuring Kendrick Lamar was nominated for Best Pop Duo/Group Performance and won the award for Best Music Video.