The book "Walk Away" offers a comprehensive analysis of the song of the same name by Christina Aguilera, which was recorded for her second studio album "Stripped" in 2002. It highlights the song's backstory, the artists involved, and the musical influences that led to its creation. Although the song was not originally released as a single, it gained attention nearly eight years after the album's release due to a performance by a talent show participant in Denmark. The book also includes information about the song's performance during the "Stripped World Tour" and provides insight into the song's reception over the years. The content is primarily sourced from articles available online from Wikipedia and other free sources, thus offering an informative foundation for music lovers and fans of Christina Aguilera.