"Four In One" is a bebop composition by Thelonious Monk, first recorded in 1954 for his Riverside album Criss-Cross with a group that included Sonny Rollins, Hank Mobley, and Art Blakey. The piece showcases Monk's characteristic angular melodic writing, with intervallic leaps, syncopated phrasing, and dissonant harmonies that emphasize the flatted fifth. The melody demands precise execution from the soloist, combining punchy rhythmic statements with a playful yet technically demanding character. Harmonically, the tune employs cycling dominant chords, a device Monk used frequently to generate forward motion and tension within his compositions. While not as widely performed as Monk staples like "Round Midnight" or "Straight, No Chaser," the tune occupies a respected place among his deeper catalog pieces and has attracted dedicated interpreters over the decades. The group Sphere, featuring Kenny Barron, named their 1984 tribute album Four in One, and saxophonist Sonny Fortune recorded a full album of the same title for Blue Note in 1994. The composition continues to appear in Monk tribute concerts and specialized repertoire settings, where its quirky personality and harmonic ingenuity reward musicians willing to engage with its particular challenges.
