sentences:  When issued, these records were usually credited to Ellington's sidemen Cootie Williams, Barney Bigard, Rex Stewart or Johnny Hodges, in order to differentiate them from the big band sound associated with the Duke Ellington Orchestra.Notable among these recordings are Bigard's original hit version of "Caravan", and jazz classics such as Hodges' "Jeep's Blues" and Williams' "Dooji Wooji" (all written or co-written by Ellington).She started producing in Chicago but took a job working for Irving Mills in New York in 1937.