Earl Gaines (August 19, 1935 – December 31, 2009) was an American soul blues and electric blues singer. Born in Decatur, Alabama, he sang lead vocals on the hit single "It's Love Baby (24 Hours a Day)", credited to Louis Brooks and his Hi-Toppers, before undertaking a low-key solo career. In the latter capacity he had minor success with "The Best of Luck to You" (1966) and "Hymn Number 5" (1973). Noted as the best R&B singer from Nashville, Gaines was also known for his lengthy career.