Believe it or not, this song started off as a bank commercial, written by and performed by Paul Williams.
Until Richard Carpenter was watching television in a Quaalude-induced haze and saw that commercial. He knew it had to be theirs. And, with Karen Carpenter's powerful pre-anorexic vocals, a wedding classic was born.
Not kidding about it being a bank commercial first..... This was the first in a series of commercials using this song, envisioned by the legendary ad man Hal Riney for The Crocker Bank.