Lou Donaldson was an American alto saxophonist and composer born on November 1, 1926, in Badin, North Carolina. Over a career spanning more than five decades, he authored a catalog of approximately ninety compositions that traced a path from bebop through hard bop, soul jazz, and jazz-funk. His writing emphasized blues-drenched melodies and infectious grooves, often built around saxophone-and-organ combinations that made his music immediately accessible to audiences in urban jazz clubs. Donaldson's most celebrated compositions include Blues Walk, the title track of his 1958 Blue Note album that became his signature theme, and Alligator Bogaloo from his 1967 soul jazz classic of the same name. Lou's Blues is among the tunes featured on AllSolos. His extensive discography as a leader on Blue Note Records, stretching from 1952 through the 1970s, served as a launching pad for several musicians he introduced to the label, including Baby Face Willette, Big John Patton, and Lonnie Smith. Donaldson also recorded alongside Clifford Brown, Art Blakey, Horace Silver, Jimmy Smith, George Benson, and Charles Earland. He died on November 9, 2024, at the age of ninety-eight, leaving behind a body of work that helped define the soulful, groove-oriented side of jazz.