"Rhythm Of The Rain" was written by The Cascades lead singer John Gummoe, who told SongFacts the story in October 2008: "I wrote 'Rhythm of the Rain' over a period of time, but the lyrics began while I was serving in the US Navy aboard the USS Jason (AR-8). I was standing a mid watch on the bridge while we were underway to Japan. We were sailing up in the North Pacific and it was raining heavily and the seas were tossing."

"The title came to me first and I liked the 'ring' of it, the way it flowed, and that night I wrote down most of the lyrics. It was like the rain was talking. It was later on that I sat down at a piano and was fooling around with the black keys and started playing a sequence from E flat down to F sharp, well, if you do it you'll see it's the melody that is now stuck in the heads of millions of people around the world. Later on, when we did a demo on the song, that great little ding ding thing that goes FC-FC, DA, DA came to be. The great arranger Perry Botkin Jr. enhanced that little hook and it was producer Barry De Vorzon who came up with the idea of opening the song with that famous burst of thunder."