In June 2021, Rodrigo released "Sour Prom", a prom-themed concert movie on YouTube. Three days later, "Time" named her Entertainer of the Year. In an Instagram post on December 24, 2021, Rodrigo uploaded a short video of a Christmas song called "The Bels" that she wrote and recorded at age five. By the end of the year, "Billboard" said that Rodrigo ended the year with the most songs sold. She had eight songs on the year-end Global 200 chart, including "Drivers License" at number four, "Good 4 U" at number nine, and "Deja Vu" at number 27. In the United States and United Kingdom, "Sour" was the third and fourth bestselling album of 2021. "Sour" and "Drivers License" were also Spotify's most streamed album and song globally. To support "Sour", Rodrigo began her first tour, the Sour Tour, which ran from April to July 2022.