Armand "Jump" Jackson

He is best known for creating the forceful "sock" rhythm found on the backbeat on many blues recordings made in Chicago, Illinois, United States, during late 1940s and 1950s.

The following year, his ensemble was performing at the Sky Club, and Jackson moved on to led the house band at Martin's Corner from late 1943 through to 1945.

[4] The Melrose sound had dominated Chicago blues before World War II,[6] and on the back of that Jackson recorded four sides in his own right on September 13, 1946, for Columbia, with St. Louis Jimmy Oden providing the vocals on three of them.

[4] The same year, he recorded with Tampa Red in a line-up comprising Blind John Davis, Ernest "Big" Crawford, Sax Mallard, and as leader of the ensemble, Jackson playing the drums.

[4] Jackson continued to develop his unique "fat, greasy sock rhythm", that appeared on many of the blues records produced in Chicago in the late 1940s and early 1950s.

[10][11] In addition, Jackson played the percussion on every track on the Sykes compilation album, Chicago Boogie, issued on CD in 2004 by Delmark Records.

[13][14][15] Jackson's song, "Angry Lover", was recorded by Shakey Jake Harris on his 1961 album, Mouth Harp Blues.

[18][19] Jackson co-wrote with Sonny Thompson seven of the tracks which appeared on Otis "Big Smokey" Smothers 1962 album, Sings the Backporch Blues.