This document provides track listings and production details for Christina Aguilera's "Back to Basics" album. It lists 13 songs on the album, along with the producers, songwriters, and samples/inspirations used for each song. The introductory track "Intro (Back to Basics)" pays tribute to past soul, blues, jazz, and gospel artists who inspired higher generations. It was produced by DJ Premier and contains a sample from a B.B. King performance. The album explores various genres including soul, jazz, and blues. Detailed production credits are provided for each song.