Ever since 1999 we have had the top 2000 records of all times being
broadcast between Christmas and New Year.

Whilst driving happily along, there came number 1481: Sam Cooke -
Wonderful World (1960) and all of a sudden the following part of the
lyrics hit me:

"Don't know what a slide rule is for"

Never noticed that bit before.

Is this the only occurence of a slide rule in a song?

Ronald van Riet