From the close-harmony brother acts of the '30s evolved Charlie and Ira Louvin, ranking among the top duos in country music history. With Ira's incredibly high, pure tenor and Charlie's emotional and smooth melody tenor, they learned well from the Bolick brothers (the Blue Sky Boys), the Monroe Brothers, the Delmore Brothers, and other major family duos of the previous generation, preserving the old-time flavor while bringing this genre into the '50s, when country music moved to a newer sound. Whatever type of songs they recorded -- gospel, folk, hillbilly, or '50s pop -- those songs became the Louvins'. Add to the list the many Louvin compositions (for example, "If I Could Only Win Your Love," Emmylou Harris' first hit), and you have an act that is outstanding in country music history. Their career took awhile to get going, partly because of interruptions from WWII and the Korean War. In the early '50s, after making a reputation for unexcelled gospel singing, the Louvins broadened their repertoire, recording "The Get Acquainted Waltz" (with Chet Atkins adding another guitar to Charlie's and to Ira's mandolin), a fair hit that showed success was reachable with non-religious music. The electric guitar, with the duo's unique harmony and Ira's exceptional tenor, created a sound that fans asked for in increasing numbers. In 1955, after ten unsuccessful auditions, they finally joined the Opry, where they performed to great acclaim until 1963, when they broke up. They had a number of hits, including the much-covered "When I Stop Dreaming" and "Cash on the Barrel Head." Following the duo's breakup, Ira and Charlie both pursued solo careers.