"Love's Theme" is an instrumental piece written by Barry White in 1965 but recorded and released as a single by White's Love Unlimited Orchestra in late 1973. It was one of the few instrumental and purely orchestral singles to reach #1 on the Billboard Hot 100 chart in the United States, which it did in early 1974. Billboard ranked it as #3 on the Year-End Hot 100 singles of 1974. Over the years, Love’s Theme became one of the best-selling pop instrumentals of all time. The song was included on two albums: 1973's Under the Influence of...
https://en.wikipedia.org/wiki/Love%27s_Theme