Cadillac Records: Music From the Motion Picture is a soundtrack album for the film Cadillac Records. It features covers of classic songs from Chess Records' singers as performed by the film's actors including Beyoncé (as Etta James), Eamonn Walker (as Howlin' Wolf) and Jeffrey Wright (as Muddy Waters). It also features original songs from contemporary artists such as Beyoncé's sister, R&B singer Solange Knowles and rapper Nas. The soundtrack has been released in single and double-disc editions.