: The song was inspired by the 1962 film Days of Wine and Roses , which follows a couple struggling with alcoholism. Withers was moved by the characters' cycle of weakness and strength, comparing their relationship to "going back for seconds on rat poison".
: One of the most famous parts of the song is the bridge, where Withers repeats the phrase "I know" 26 times. Legend has it that he intended to write more lyrics for that section, but other musicians in the studio, including producer Booker T. Jones, advised him to keep it as it was. Musical Composition Bill Withers - Aint No Sunshine (Audio)
Bill Withers wrote the song while working as a technician at an aircraft-parts factory, specifically making bathroom units for Boeing 747s. : The song was inspired by the 1962