Complex sentence: In 1961, Roger Bush replaced Eric Jr. on double bass, who had left the band to get married, and between 1959 and 1962, the Country Boys released three singles on the Sundown, Republic and Briar International record labels.
Split into simpler sentences: In 1961, Roger Bush replaced Eric Jr. on double bass, who had left the band to get married. Between 1959 and 1962, the Country Boys released three singles on the Sundown, Republic and Briar International record labels.