Who composed the theme tune for 'The Simpsons' television series?

"The Simpsons Theme", also referred to as "The Simpsons Main Title Theme" in album releases, is the theme music of the animated television series The Simpsons. It plays during the opening sequence and was composed by Danny Elfman in 1989, after series creator Matt Groening approached him requesting a retro-style theme. The piece, which took just over 3 days to create, has been noted by Elfman as the most popular of his career. The theme, as used for the opening sequence, was re-arranged during season 2, and the current arrangement by Alf Clausen was introduced at the beginning of the third season. It has also been edited many times to coincide with edits of various lengths for the opening sequence, and there have been extended edits and re-recordings for lengthened opening sequences. Several versions of the saxophone solo riff, ostensibly played by character Lisa Simpson in the animated sequence, have been created over the course of the series.