'Back to Basics' is the fifth studio album by American singer Christina Aguilera, originally released on August 9, 2006 by RCA Records as a double album.

Serving as executive producer, she enlisted a wide range of producers including DJ Premier, Rich Harrison, Rob Lewis, Mark Ronson, and Linda Perry. Recording sessions began in January 2005 and ended in April 2006, taking place at Chalice Recording Studios and Record Plant.

Inspired by Aguilera's 1920s–1940s idols, including Billie Holiday, Otis Redding, Etta James, and Ella Fitzgerald, 'Back to Basics' was described by Aguilera herself as a fusion of old-school jazz and soul inspirations with a modernized style.