Olivia Rodrigo Sour

Originally planned as an EP, Rodrigo expanded Sour into a full-length album following the viral success of her debut single, "Drivers License".

Influenced by Rodrigo's favorite genres and singer-songwriters, Sour is primarily a pop record that spans from energetic pop punk songs to bedroom pop ballads. Its subject matter centers on adolescence, failed romance, and heartache. She said the album explores her perils and discoveries as a 17-year-old, with its title referring to the "sour" emotions young people experience but are often criticized for, such as anger, jealousy, and unhappiness.

Three singles preceded Sour's release, all of which entered the top three of the US Billboard Hot 100. The lead single, "Drivers License", topped the chart and propelled Rodrigo to mainstream prominence. It was followed by "Deja Vu", which peaked at number 3, and "Good 4 U", the album's second chart-topper. It made Rodrigo the first artist in history to debut their first three singles in the top 10 of the Hot 100, and Sour the first debut album in history to spawn two number-one debuts on the chart. The album broke the global Spotify record for the biggest opening week for an album by a female artist. It topped the charts in several countries, including the US Billboard 200. "Traitor", prior to becoming the fourth single, landed at number nine on the Hot 100 as the fourth top-10 song from the album. Sour was one of the best-selling albums of 2021.