Millennium is the sixteenth studio album by American band Earth, Wind & Fire released in September 1993 on Warner Bros. Records. The album reached No. 8 on the US Billboard Top R&B Albums chart, No. 39 on the US Billboard 200, No. 18 on the Japanese Pop Albums chart and No. 29 on the Dutch Album Top 100. Millennium has also been certified Gold in Japan by the RIAJ.

"Sunday Morning" is a song recorded by American band Earth, Wind & Fire, released in August 1993 by Reprise Records as the second single from their sixteenth album, Millennium (1993). The song reached No. 10 on the US Billboard Adult R&B Songs chart, No. 20 on the Billboard Hot R&B Singles chart and No. 35 on the Billboard Adult Contemporary Songs chart. "Sunday Morning" also reached No. 26 on the Dutch Pop Singles chart and No. 33 on the Canadian RPM Top Singles chart. The song was Grammy nominated in the category of Best R&B Vocal Performance by a Duo or Group.