'Now, Then & Forever' is the group's first album in eight years.
Earth, Wind and Fire initially wanted to release its new album around the 2012 presidential election, but the band realized it wasn't satisfied with the songs it created.
"We have a lot more bells and whistles in place now and the record is better," singer Philip Bailey said in a recent interview.
"Now, Then & Forever," the group's first album in eight years, will be released Sept. 10. Bailey said the band called co-founding member Larry Dunn and others to help produce its latest sound.