The file
Written by the man who composed The Impossible Dream, and about frozen cake. The Sara Lee line is famous for its grammar, which people argue about, and for being sung in a soft, slow way that made the cake sound expensive.
It ran through the '70s, '80s and '90s, and the line is one of the ones that comes up whenever a room of Gen X starts listing jingles.
Sources: Wikipedia — Sara Lee (brand)