Light Blue is a jazz tune composed by Thelonious Monk, first released in 1958 on the album Thelonious in Action. It is a compact eight-bar ballad known for Monk’s distinctive angular melodies and inventive turnarounds. The piece remains a staple of Monk’s repertoire and has inspired later tributes, including Light Blue: Arthur Blythe Plays Thelonious Monk (1983) by Arthur Blythe on Columbia, which presents Monk’s compositions in a fresh setting.