Walter Maynard Ferguson (May 4, 1928 – August 23, 2006) was a Canadian jazz musician and bandleader. He came to prominence playing in Stan Kenton's orchestra, before forming his own band in 1957. He was noted for being able to play accurately in a remarkably high register, and for his bands, which served as stepping stones for up-and-coming talent. Maynard Ferguson was one of a handful of virtuoso musician/bandleaders to survive the end of the big band era and the rise of rock and roll. He demonstrated a remarkable ability to adapt to the musical trends that evolved from the 1940s through the 2000s. Ferguson's albums show an evolution from big band swing, bebop, cool jazz, Latin, jazz / rock, fusion with classical and operatic influences. Through his devotion to music education in America, Ferguson was able to impart the spirit of his jazz playing and technique to scores of amateur and professional trumpeters during the many Master Classes held throughout his long career.
Ferguson was not the first trumpeter to play in the extreme upper register, but he had a unique ability to play high notes with full, rich tone, power, and musicality. While regarded by some as showboating, Ferguson's tone, phrasing and vibrato was instantly recognizable and has been influential on and imitated by generations of amateur and professional trumpet players.