There are two groups named The Cascades. One is a vocal group from the United States active in the 60's and the other is a gothic rock band from Germany currently active. 1. The Cascades were an American vocal group best known for their hit single "Rhythm Of The Rain" in 1963. The name The Cascades is supposedly inspired by a nearby box of detergent. The group's membership consolidated as John Gummoe (born in Cleveland, Ohio, 2 August 1938) (lead vocals)