The group had more top 40 hits in the next few years. "My Own True Love" was a vocal adaptation of "Tara's Theme" from the soundtrack of Gone with the Wind and became the group's second hit. "Have You Heard" and "Why Don't You Believe Me" also reached the Top 40 charts and, like "You Belong to Me," were originally early '50s female vocal hits (Joni James, in this case). The group became known for mixing doo-wop vocals with big band arrangements. Tom Bialoglow left in 1963. Mike Kelly, who had recorded on the group's original demos for George Paxton, replaced Joey Vann as lead vocalist in 1964.