Complex sentence: He proved that he could become a country singer in his own right and become successful, with songs such as "The Girl on the Billboard" and "The Belles of the Southern Belle", both highlights from his career.
Split into simpler sentences: He proved that he could become a country singer in his own right and become successful. With songs such as "The Girl on the Billboard" and "The Belles of the Southern Belle" are both highlights from his career.