Leonard Niehaus (born June 1, 1929) is an American alto saxophonist, arranger, and composer on the West Coast jazz scene. He has played with the Stan Kenton big band, Ray Vasquez Trombonist and Vocalist, Phil Carreon Orchestra, and various other jazz bands on the West Coast of the U.S. Niehaus has arranged and composed for motion pictures, including several produced by Clint Eastwood.

For more information press link below:
https://en.wikipedia.org/wiki/Lennie_Niehaus