Love's Theme, Part I

I had this tune running through my head last week and couldn't identify it, and so started listening to instrumental music to try to find it. I since have found at least 12 different versions of it, including some with words. I believe this is the original. The composer is Barry White.  This is called "Love's Theme by Barry White and Love Unlimited Orchestra":



Nobody else that I can find has commented on the connections between the different versions. There are 3 main versions in addition to the original one by Barry White: "The Hustle" by Van McCoy; "Feels So Good" by Chuck Mangione; and "Rise" by Herb Alpert.