8th Day was an American R&B group from Detroit, Michigan. == History == The Holland–Dozier–Holland (HDH) songwriting team had scored hits in 1970 with the group 100 Proof (Aged in Soul). When the latter's song "Somebody's Been Sleeping in My Bed" became a hit, radio stations also began playing the tune "She's Not Just Another Woman". HDH wanted to release the song as another single but did not want to hurt the sales of "Somebody's Been Sleeping in My Bed",... [more on Wikipedia]