After signing to Columbia Records, the group released "Child Is Father to the Man". The album cover was considered quite innovative showing the band members sitting and standing with child-sized versions of themselves. The album slowly picked up in sales. Growing artistic differences among the founding members resulted in several personnel changes for the second album. Colomby and Katz wanted to move Kooper exclusively to keyboard and composing duties, while hiring a stronger vocalist for the group, causing Kooper's departure in April 1968. He became a record producer for the Columbia label, but not before arranging some songs that would be on the next BS&T album. The group's trumpeters, Randy Brecker and Jerry Weiss, also left and were replaced by Lew Soloff and Chuck Winfield. Brecker joined Horace Silver's band with his brother Michael, and together they eventually formed their own horn-dominated musical outfits, Dreams and the Brecker Brothers. Jerry Weiss went on to start the similarly styled group Ambergris.