In 1999, BMI publishing listed “Rhythm of the Rain” as the most performed song on radio and TV for the entire 20^th century. The biggest and most successful version is the original by a San Diego-based group called the Cascades.  The 45 is no more than $10.00 but their album released on Valiant Records in 1963 is worth up to $100.00 in mono and $400.00 in stereo.