What instruments does Earth Wind and Fire use in September?

Earth, Wind & Fire is known for using a wide variety of instruments in their music, including horns such as trumpets, saxophones, and trombones, as well as keyboards, Guitars, bass, and drums. In the song "September," specifically, you can hear prominent use of horns, keyboards, and guitars creating a funky and energetic sound that is characteristic of the band's style. The combination of these instruments, along with their intricate arrangements and tight musicianship, contributes to Earth, Wind & Fire's distinctive sound.