Jake Jerger, an American jazz arranger and composer active primarily from the 1940s through the 1960s, was a significant contributor to the big band sound. Known for his sophisticated harmonic voicings and intricate counterpoint, Jerger's arrangements often blended swing era traditions with emerging bebop influences. He frequently collaborated with bandleader Frank Panico, crafting charts that showcased Panico's ensemble's precision and soloists' virtuosity. Jerger's work, though perhaps less widely recognized than some contemporaries, was instrumental in shaping the repertoire and stylistic evolution of many regional and national jazz orchestras during a pivotal period in jazz history.