Thelonious Monk was an American pianist and composer who became one of the major figures of bebop and modern jazz. His playing was defined by angular chords, expressive silences, unpredictable rhythms and a highly personal harmonic language, giving his compositions an instantly recognizable identity. With pieces such as ’Round Midnight, Straight, No Chaser and Blue Monk, Thelonious Monk profoundly influenced the development of jazz piano and modern composition.