Charles Mingus Jr. (April 22, 1922 – January 5, 1979) was an American jazz upright bassist, composer, bandleader, pianist, and author. Recognized as one of the most significant jazz musicians and composers in history, his career spanned three decades, during which he collaborated with jazz greats like Duke Ellington and Charlie Parker. Mingus's musical contributions ranged from advanced bebop and avant-garde jazz to pioneering post-bop and progressive big band experiments. He was a major proponent of collective improvisation. Born in Nogales, Arizona, Mingus was predominantly raised in the Watts area of Los Angeles. His ethnic background was complex, encompassing German American, African American, Native American, Chinese British, and Swedish heritage. Despite his mother's preference for religious music, Mingus developed an early passion for jazz, particularly the music of Duke Ellington. He initially studied trombone and cello before taking up the double bass in high school. He received formal training from Red Callender and Herman Reinshagen (principal bassist of the New York Philharmonic) and studied compositional techniques with Lloyd Reese. His early experiences with racism and educational shortcomings deeply influenced his music, which often explored themes of discrimination and justice. Mingus quickly gained renown as a bass prodigy, performing with Barney Bigard, Louis Armstrong, and Lionel Hampton. His outspoken personality and racial background sometimes created difficulties, leading him to leave groups and even being fired by Duke Ellington. In the early 1950s, he frequently played with Charlie Parker, who profoundly influenced him despite Mingus's conflicted feelings about Parker's self-destructive tendencies. In 1952, Mingus co-founded Debut Records with Max Roach, aiming to give musicians more control over their recordings. A notable release from the label was the May 1953 Massey Hall concert featuring Dizzy Gillespie, Parker, Bud Powell, and Roach. Throughout the 1950s, Mingus frequently led a mid-sized ensemble known as the Jazz Workshop, fostering spontaneous exploration among musicians and anticipating elements of free jazz. This period was his most prolific, yielding over 30 albums, including seminal works like "Pithecanthropus Erectus" (1956) and "Mingus Ah Um" (1959), which features the acclaimed "Goodbye Pork Pie Hat" and "Fables of Faubus." Drummer Dannie Richmond, who joined him in 1957, became a long-term collaborator. In the 1960s, Mingus formed a quartet with Eric Dolphy that paralleled Ornette Coleman's innovative approach. He released "The Black Saint and the Sinner Lady" (1963), considered a masterpiece of jazz orchestration, and "Mingus Plays Piano." His 1964 sextet, featuring Dolphy, was highly regarded but short-lived. He married Susan Graham Ungaro in 1966. By the mid-1970s, Mingus was afflicted by motor neuron disease, which progressively ended his ability to play the bass. Despite his physical decline, he continued composing and supervised several recordings, including a collaboration with Joni Mitchell on her album "Mingus." Mingus had a notoriously fiery temperament, earning him the moniker "the Angry Man of Jazz," and was known for onstage outbursts and conflicts. He also experienced bouts of clinical depression. His autobiography, "Beneath the Underdog: His World as Composed by Mingus" (1971), provided a unique, often exaggerated, insight into his life and views on race and society. Charles Mingus Jr. died on January 5, 1979, at the age of 56, in Cuernavaca, Mexico, where he had traveled for treatment and convalescence. His ashes were scattered in the Ganges River. His musical legacy is maintained by organizations like the Mingus Big Band, Mingus Orchestra, and Mingus Dynasty, overseen by his widow, Sue Graham Mingus. His monumental composition, "Epitaph," was fully premiered a decade after his death. He received numerous accolades throughout his career and posthumously, including a Guggenheim Fellowship, induction into the DownBeat Jazz Hall of Fame, and a Grammy Lifetime Achievement Award. The Library of Congress acquired his collected papers, recognizing them as a paramount acquisition in jazz history.