First recorded (as “Dreamy Blues”) by The Harlem Footwarmers (1930).
Also recorded by The Jungle Band (1930), Duke Ellington & His Cotton Club Orchestra (1930), Paul Robeson (1937), Ella Fitzgerald (1957).
Hit version by The Norman Petty Trio (US #14 1954).
From the wiki: “‘Mood Indigo’ was written by Duke Ellington and Barney Bigard. Ellington is said to have claimed ‘I wrote [‘Mood Indigo’] in 15 minutes while I was waiting for my mother to finish cooking dinner.’
“Ellington’s biographer, Terry Teachout, described the song as ‘an imperishable classic, one of a handful of songs that come to mind whenever Ellington’s name is mentioned anywhere in the world.’ The tune was composed for a radio broadcast in October 1930 and was originally titled ‘Dreamy Blues’. It was ‘the first tune I ever wrote specially for microphone transmission,’ Ellington recalled. ‘The next day wads of mail came in raving about the new tune.’ Renamed ‘Mood Indigo’, it went on to became a Jazz standard.