Artist: Billy 'The Kid' Emerson
Author: Billy Emerson
B-side of Move, Baby, Move. Billy also wrote Red Hot, his next Sun single (see there).
Elvis Presley [as When It Rains It Really Pours for Sun, finally released in '65 with overdubbed instruments on RCA lp Elvis For Everyone; his original version was later heard on Elvis: A Legendary Performer Vol.4]
Big Town Playboys
Merle Haggard's When It Rains It Pours ('90) is written and first recorded by John Cody Carter ('Lone Oak - '84).