Thelonious Sphere Monk (October 10, 1917 – February 17, 1982) was an American jazz pianist and composer considered "one of the giants of American music". Monk had a unique improvisational style and made numerous contributions to the standard jazz repertoire, including "Epistrophy", "'Round Midnight", "Blue Monk", "Straight, No Chaser" and "Well, You Needn't". Monk is the second most recorded jazz composer after Duke Ellington, which is particularly remarkable as Ellington composed over 1,000 songs while Monk wrote about 70.