T. Clark is a distinguished American jazz arranger and composer, active primarily from the mid-20th century. Known for his sophisticated and swinging big band charts, Clark’s work often blended traditional jazz harmonies with innovative rhythmic structures. His arrangements for the legendary Count Basie Orchestra in the 1950s, including the iconic "Atomic Basie" album, are particularly celebrated for their dynamic interplay and powerful brass writing. Clark also contributed significantly to the libraries of other prominent bandleaders, leaving an indelible mark on the evolution of jazz ensemble music through his precise scoring and vibrant orchestrations.