Benjamin Alexander Riley Jr. (July 17, 1933 – November 18, 2017) was an American jazz drummer known for his work with Thelonious Monk, as well as Alice Coltrane, Stan Getz, Woody Herman, Eddie “Lockjaw” Davis, Ahmad Jamal, Kenny Barron, and as member of the group Sphere. During the 1970s he was a member of the New York Jazz Quartet.

Benjamin Alexander Riley Jr. was born in Savannah, Georgia, and at the age of four moved with his family to New York City. In high school he played in the school band, and after graduation he joined the army, where he was a paratrooper, and also played with the army band.

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