Under her leadership the company flourished. When Henderson died incontrol was taken over by Edna White, the first women executive officer in the male dominated music industry. Thomas King, a local trombone player, White developed his first trombone in As production grew, King became known for brass and woodwind instruments. A new lightweight pro series case has also replaced the bulky wood-shell cases. The counterweight allows a player to easily modify the response characteristics of the King 3B. King has brought back the removable counterweight and vintage inspired engraving. King 3B trombones are known worldwide as one the most historic and highest regarded instruments on the market.