Complex sentence: Bowman left the band sometime before the release of their second album Nothing But The Truth as he chose to follow his passion and grow as a songwriter and record producer in the independent music sector, working with Debra Byrne on her "Sleeping Child" album.
Split into simpler sentences: Bowman left the band before the release of their second album Nothing But The Truth. Since leaving Southern Sons, Bowman has pursued songwriting and record production in the inedpendant music sector; most notably working with Debra Byrne on her "Sleeping Child" album.