BTW, I am glad Deberg posted this here. Had it been in the Media thread, I would have missed it. This is a nice drive down memory lane.
No one has mentioned the Moody Blues. One of my favorites.
Band member Justin Hayward wrote and composed the song at age 19 in Swindon, and titled the song after a girlfriend gave him a gift of satin bedsheets. The song itself was a tale of a yearning love from afar, which leads many aficionados to term it as a tale of unrequited love endured by Hayward.
An aside: In theory, 10cc got its' name by the amount of fluid in an ejaculate.