The theme song and opening sequence explains the context of the show. Will Smith is revealed as a street-smart teenager, born and raised on the mean streets of West Philadelphia, while the plot of the story is shown and rapped in the theme song.
The theme song was written and performed by The Fresh Prince (Will Smith). The music was composed by Quincy Jones III, who is credited at the end of each episode. An additional credit at the end of episodes also reads "Theme song written by Will Smith" .