Earth, Wind & Fire - Let's Groove

Release date: 1981

That synthesized voice sound was created using a device called a Vocoder, which predates Auto-Tune by decades. In the late '90s, the device was revived for the hits "Blue (Da Ba Dee)" by Eiffel 65 and "Believe" by Cher.

The "Let's Groove" single and the album Raise! both sport cover art with Egyptian themes. The goddess-like figure here isn't anybody in particular, but may have been based on the goddess Isis. If you notice a lot of Egyptian themes in and around the disco era in the US, that's because the whole country was going through an Egyptian fad.

Album: Raise!