In Walked Bud was written by Thelonious Monk in honor of his friend, fellow pianist Bud Powell. Biographies of Powell cite the tune as Monk's gratitude for Powell's defense during a police raid on the Savoy Ballroom in 1945, when Powell reportedly tried to stop police from arresting Monk and was struck on the head, though other accounts differ on the details. The 1968 vocal version, with lyrics by Jon Hendricks, also refers to Dizzy Gillespie, Oscar Pettiford and Don Byas.