I Didn't Know About You
"I Didn't Know About You" is a song composed by Duke Ellington, with lyrics written by Bob Russell. Recorded in 1944 with vocal by Joya Sherrill, it was based on an instrumental first recorded by Ellington in 1942 under the title "Sentimental Lady", featuring featuring Johnny Hodges on alto saxophone.
The 1942 instrumental reached number one on the Harlem Hit Parade in 1943 and was the B-side to Duke Ellington's previous number one, "A Slip Of the Lip (Can Sink a Ship)", which had reached the top spot a week before.
The recording by Count Basie & His Orchestra (vocal by Thelma Carpenter) briefly reached the No. 21 position on the Billboard charts in 1945 and other recordings available that year were by Duke Ellington, Mildred Bailey, Jo Stafford and Lena Horne.