Complex sentence: Barnett first joined Epic Records in 1996 as Senior Vice President International, rising to Senior Vice President Worldwide Marketing for the label in 1997, then Executive Vice President/General Manager for four years after that, and rising to label President in 2004.
Split into simpler sentences: Barnett first joined Epic Records in 1996 as Senior Vice President International. He became Senior Vice President Worldwide Marketing for the label in 1997, then Executive Vice President/General Manager for four years after that becoming label President in 2004.