I Didn't Know About You is a composition by jazz-band leader Duke Ellington, with lyrics by Bob Russell. Ellington composed the song in 1944 and in 1945 he got there the charts with it. Then countless musicians, groups and vocalists and/or played on the plate, including Count Basie, Woody Herman, Stan Kenton, Ella Fitzgerald, Ben Webster, Abbey Lincoln, Mildred Bailey, June Christy, Mel Tormé, Lena Horne, Dinah Washington, Roland Kirk , Thelonious Monk(with Al Hibbler), Ornette Coleman, Kenny Burrell, Cal Tjader and Archie Shepp.