Paul J. Mares (1900-1949) was an influential American cornet player and bandleader primarily associated with the Chicago jazz scene. A prominent figure in the 1920s, Mares was a key member of the influential New Orleans Rhythm Kings, a pioneering jazz band that blended elements of New Orleans-style jazz with more modern influences. His virtuosic cornet playing and innovative improvisational style contributed significantly to the development of early jazz. Mares' notable works include recordings with the New Orleans Rhythm Kings, such as "Tiger Rag" and "The Jazz Boy Blues," which showcased his ability to combine melody with complex rhythms. He also led his own band, the Paul Mares Band, and collaborated with other jazz legends, further expanding his reach within the genre. Despite his relatively brief career, Mares' impact on jazz was profound, influencing subsequent generations of musicians. His technique and approach to ensemble playing helped lay the groundwork for future developments in jazz, particularly in the realms of improvisation and group dynamics. Mares remains a respected figure in the history of jazz, celebrated for his contributions to the genre's evolution during its formative years.